What is Blocks: Definition and 767 Discussions

Code::Blocks is a free, open-source cross-platform IDE that supports multiple compilers including GCC, Clang and Visual C++. It is developed in C++ using wxWidgets as the GUI toolkit. Using a plugin architecture, its capabilities and features are defined by the provided plugins.
Currently, Code::Blocks is oriented towards C, C++, and Fortran. It has a custom build system and optional Make support.
Code::Blocks is being developed for Windows and Linux and has been ported to FreeBSD, OpenBSD and Solaris. The latest binary provided for macOS version is 13.12 released on 2013/12/26 (compatible with Mac OS X 10.6 and later), but more recent versions can be compiled and MacPorts supplies version 17.12.

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  1. A

    Find the magnitude of the acceleration of the two blocks.

    Homework Statement a)Find the magnitude of the acceleration of the two blocks in (Figure 1) . Assume the top block slides without friction on the horizontal surface. b)If the 12-N block in (Figure 1) is replaced with a 12-N force pulling downward, as in (Figure 2) , is the acceleration of the...
  2. berkeman

    Medical Temporary Memory Blocks and Facilitating Recall Actively

    So I'm wondering if there are good studies of memory blocks and memory recall. For example, I will fairly often meet a person that I haven't seen for a while, and have a hard time recalling their name. I often "feel" like there is a mental "block" electically or chemically to recalling their...
  3. The Lich King

    Newton's Second Law question, 3 blocks acting to each other

    Homework Statement Initially, the system of objects shown in figure is held motionless, the pulley and all surfaces and wheels are frictionless. Let the force F be zero and assume that m1 can move only vertically. https://drive.google.com/file/d/0B6xlSNQyGbU5M3FTSXpNSVdmT2c/view?usp=sharing...
  4. Vitani11

    What are the accelerations of the blocks?

    Homework Statement Two blocks of mass m1 = 0.500kg and m2 = 0.510kg are connected by a string that passes over a pulley with frictionless bearings. The pulley is a uniform 0.050kg disk with a radius of 0.04m. Assume that the string is massless and inextensible and that it does not slip on the...
  5. S

    The normal reaction between blocks A and B is?

    Homework Statement 2. The attempt at a solution Let rightward acceleration of the block (A+B) be $$a$$. Let downward acceleration of block (A) be $$a'$$ down. For block A: $$mg-T=ma'$$ $$N+ma=0$$ For block B: $$T+N=Ma$$ On solving $$N=-\dfrac{m^2g}{M+2m}$$ by taking $$a=a'$$.But...
  6. Mr Davis 97

    Friction between two moving blocks

    Homework Statement Mass MA = 4 kg rests on top of mass MB = 5 kg that rests on a frictionless table. The coefficient of friction between the two blocks is such that the blocks just start to slip when the horizontal force F applied to the lower block is 27 N. Suppose that now a horizontal force...
  7. P

    A problem about friction with three blocks stacked together

    Homework Statement I think I am lacking some concept. I can't solve this one: There are three blocks of masses 2kg, 3kg and 7kg lying on a frictionless table with the 7kg block on bottom 3kg in the middle and 2kg on the top. A horizontal force of 10N is applied on the bottom block. The...
  8. A

    Two blocks connected with spring and pulley

    Homework Statement A block of mass m1= 20.0kg connected to a block of mass m2 =30.0 kg by a massless string that passes over a light, frictionless pulley. The 30.0-kg block is connected to a spring that has negligible mass and a force constant of k =250 N/m as shown in Figure P8.64. The spring...
  9. terryds

    How long will it take for the small cube to fall?

    Homework Statement A cube with 1 kg mass is put on top of a bigger cube with 3kg mass and 1 meter edges. If 10 N force is exerted on the bigger cube, while the maximum friction between the cube surface is 2 N, and g=10m/s^2 , then at one time the small cube will fall to the floor. The time...
  10. RoboNerd

    Finding ratio of masses of two blocks

    Homework Statement Two crates are stacked on top of each other on a horizontal floor. The coefficient of static friction between Box A and Box B is 0.6. The coefficient of static friction between Box A and the floor is 0.2. A force of 100 N is applied parallel to the floor on Box B. The boxes...
  11. E

    Finding the acceleration of 2 blocks

    Homework Statement A block of mass m1 = 2 kg and a block of mass m2 = 6 kg are connected by a massless string over a pulley in the shape of a solid disk having radius R = 0.250 m and mass M = 10 kg. The fixed, wedge-shaped ramp makes an angle of 30 degrees and the coefficient of kinetic...
  12. J

    Two blocks collide with spring in-between.

    Homework Statement Block 1 (mass 2 kg) is moving rightward at 10 m/s and block 2 (mass 5kg kg) is moving rightward at 3 m/s. The surface is frictionless, and a spring with spring constant of 1120 N/m is fixed on the left side on block 2. When the blocks collide, the compression of the spring is...
  13. RoboNerd

    Linear Momentum of system of two blocks

    1. Homework Statement The problem is shown in the photo above. I would like to discuss part B. Homework Equations conservation of linear momentum The Attempt at a Solutionthe solutions say that we should have the following approach: Mb*vb = [Mb + Ms] * vFinal. Plug in the numbers and get vF...
  14. P

    Two blocks on a frictionless surface; find the force

    Homework Statement Two blocks, A and B , are being pushed on a frictionless surface by a froce of 30 N to the right, .Block A has a mass of 2.0kg, Block B, being pushed by Block A is 4.0kg. Calculate the magnitude of the force that block B exerts on Block A. Homework Equations f=ma The...
  15. J

    Physics: Blocks on inclines connected by pulley problem

    Homework Statement [/B] The two blocks are moving rightward at a constant speed along their inclined surfaces. The coefficient of kinetic friction is the same for both blocks. a) Determine the coefficient of kinetic friction. b) Determine the tension in the cord that connects the blocks to one...
  16. Greg Bernhardt

    Oily substance on basement blocks

    I had some nice rainfall the past few days. I look into basement and see a shimmer on several blocks. Looks like water but when I touch it and rub it between my fingers it's more like a chemical oil feel. Any ideas?
  17. JustAverageSkill

    What is the acceleration of the 10 kg block on the frictionless ramp?

    Homework Statement The ramp in figure is frictionless. If the blocks are released from rest, which way does the 10 kg block side and what is the magnitude of its acceleration? θ=40°...
  18. W

    Two-Block Dynamics Problem: Determining Acceleration and Tension

    Homework Statement Assuming no friction is on the plane or the pulleys and the pulley and rope have negligible mass... Determine the acceleration of each block and the tension in each cord. Block A weighs 100kg, Block B weighs 300kg. Homework Equations ΣF = ma ma = 100kg mb = 300kg The...
  19. RoboNerd

    Understanding why the initial height of one block is equal t

    Homework Statement A 20.0-kg block is connected to a 30.0-kg block by a string that passes over a light frictionless pulley. The 30.0-kg block is connected to a spring that has negligible mass and a force constant of 250 N/m. The spring is unstretched when the system is as shown in the figure...
  20. I

    Acceleration of Two Blocks Connected by a Pulley on a Frictionless Ramp

    Homework Statement Two blocks are of the same mass M. One lies on a frictionless ramp with slope θ, while the other one, connected by a rope, hangs by a pulley with a moment of inertia of I and a radius of r. Find the acceleration of the two blocks. I don't have an actual picture, but this one...
  21. T

    Two Blocks & Spring: Max Extension 30 cm

    Homework Statement Two blocks of mass 3 kg and 6kg are placed on a smooth horizontal surface.They are connected by a light spring of force constant k=200N/m. Initially the spring is unstretched. The block of mass 3 kg is imparted a velocity of 1m/s and the block of mass 6 kg is imparted 2...
  22. T

    Collision and Momentum of Blocks

    Homework Statement If block A slides with a velocity into block B which is at rest, and after this collision block B ends up with a velocity and block A is stationary after. Block B has a mass of 5m. Would this type of collision be an elastic collision or inelastic? How do you know? What...
  23. N

    Spring Compression (x-x0) = .00579 m

    Homework Statement A spring (k = 2900 N/m ) is compressed between two blocks: block 1 of inertia 1.70 kg and block 2 of inertia 2.00 kg. The combination is held together by a string (not shown in (Figure 1) ). The combination slides without spinning across low-friction ice at 2.90 m/s when...
  24. astrololo

    Blocks pushing on one another

    Homework Statement On a surface without friction, we have 3 blocs with mass A=0,4 kg B=0,1 Kg C=0,3 Kg which are placed one beside the other, with A being first, B second and C third.. If we push on the bloc A with a horizontal force of 2,4 N, determine what is the acceleration and what are...
  25. J

    Two blocks on a plane with a pulley

    Homework Statement A block of mass m1 = 3.70 kg on a frictionless inclined plane of angle 30.0° is connected by a cord over a massless, frictionless pulley to a second block of mass m2= 2.30 kg hanging vertically. What are (a) the magnitude of the acceleration of each block and (b) the...
  26. I

    Centripetal Motion Question (Two Blocks Stacked)

    Homework Statement Mass 1 (2.0kg) sits on top of mass 2(5.0kg), which rests on a frictionless surface. The coefficient of static friction between mass 1 and mass 2 is 0.30. A string of length 5.0m is tied to mass 2, and both masses are swung around in a horizontal circle. Calculate: a) The...
  27. B

    General Physics Question(s): attatched blocks with strings

    Homework Statement This is just a general question; but if there are two blocks attached with a string, how do you calculate acceleration and tension? Like, do you add the masses together and work with it, or do you do each separately? Also; if you have one block on an incline, and another...
  28. C

    Two blocks connected by springs moving in a circle

    Homework Statement Block A and block B are on a frictionless table as shown in Figure 2. Spring 1 connects block A to a frictionless peg at 0 and spring 2 connects block A and block B. Their masses are respectively mA=0:45 kg and mB=0:32 kg. When the blocks are in uniform circular motion about...
  29. S

    Two blocks connected by a string

    Two 2.4-kg blocks are connected by a string draped over the edge of a slippery table, so that one block is on the table and the other is just hanging off the edge. A restraint holds the block on the table in place, and the string is 0.50 m long. After the restraint is removed, what speed does...
  30. N

    Force & Motion Homework: Force Diagrams, Velocities & Accelerations

    Homework Statement A small box (mass m1) is placed upon a large box (mass m2); the large box i placed on a horizontal table. The boxes begin a rest on the table. The lower box is hit by a horizontal blow at the time t=0 resulting in a initial velocity v0. The frictioncoefficient between all...
  31. P

    Tensions with 3 blocks on a single pulley

    Homework Statement The diagram shows two blocks, each of mass m, connected by cord A, and the top block of mass m connected to the block of mass M by cord B. Both cords are of negligible mass. Cord B passes over a frictionless peg that is fixed in place. The system of blocks and cords is...
  32. A

    What is the force required to keep two blocks in equilibrium

    Homework Statement Blocks A and B each weight 170 lb and rest on frictionless surfaces. They are connected to one another by cable AB. Determine the force P required to hold the blocks in the equilibrium position shown and the reactions between the blocks and surfaces. Hint given: This...
  33. O

    2 blocks collide, 5% energy loss. 2 answers, which correct?

    Homework Statement The question I have is not how to arrive at the correct values of final velocity, but once I have the values of final velocity, how do I know which velocities (which are computed from a quadratic equation) are correct? Two blocks, block A and Block B, are traveling to the...
  34. Rococo

    Frictional force acting between 2 stacked blocks

    Homework Statement [/B] In the figure above, block A has mass ##m_A=25kg## and block B has mass ##m_B=10kg##. Both blocks move with constant acceleration ##a=2m/s^2## to the right, and the coefficient of static friction between the two blocks is ##\mu_s = 0.8##. The static frictional force...
  35. manaXmizery

    Forces acting on two stacked blocks

    Homework Statement A 1.5 kg block rests on top of a 7.5 kg block which are attached using a cord to a pulley - there is no friction anywhere. What force must be applied to the bottom block so the top block accelerates to the right at 2.5 m/s^2? Homework Equations m1 = 1.5kg a(to the right) =...
  36. O

    What happens when blocks collide?

    Suppose a 10 kg block is set on a frictionless surface of infinite length. I then apply a constant force in the form of a constant push such that the block accelerates at a constant rate of 1 m/s^2. The force I apply will be F=ma= 10kg*1m/s^2= 10N. Suppose I apply this force for 10 seconds...
  37. N

    How Fast Does the Lighter Block Travel When the Spring Relaxes?

    Homework Statement A system consists of two blocks, of masses m and 2m, attached to the ends of a massless spring with a force constant k. The system is placed on a horizontal frictionless surface. Initially, the spring is relaxed. The blocks are then pulled apart an “extra” distance x and...
  38. J-dizzal

    Center of mass of two connected different density blocks

    Homework Statement The figure shows a composite slab with dimensions d1 = 11.6 cm, d2 = 2.85 cm, and d3 = 13.4 cm. Half the slab consists of aluminum (density = 2.70 g/cm3) and half consists of iron (density = 7.85 g/cm3). What are (a) the x coordinate, (b) the y coordinate, and(c) the z...
  39. G

    Static friction between 2 blocks and tension of string

    Homework Statement the maximum force is F=F1 +F2 + T as shown in the textbook... I can't understand why the tension of spring is also = F1...Is it because of the writer assume the spring is directly attached to the part P (upper part of the block) ?? Homework EquationsThe Attempt at a Solution
  40. mala06

    What Determines Maximum Tension in a Cord Between Two Blocks on Inclined Planes?

    Homework Statement Two blocks of weight 50N and 200N are connected by a cord rest on two inclined planes .determine the maximum tension in the cord when limiting friction condition develop in both blocks R1=Reaction of weight 50N R2=reaction of weight 200 N[/B]Homework Equations for block of...
  41. O

    2 blocks connected by massless string VS. pulley system

    (Note: The title would better describe the subject if written like this: "2 blocks on a horizontal frictionless surface connected by a massless string vs. pulley system")Hello, I have a problem regarding pulling two blocks of different masses connected by a string horizontally with opposing...
  42. O

    5 blocks suspended from ceiling -- What are the tensions?

    Homework Statement 5 blocks connected by strings of negligible masses are suspended from a ceiling by a string of negligible mass. The strings and masses in order from bottom to top are M1, S1, M2, S2, M3, S3, M4, S4, M5, S5 M1 = 2kg M2 = 1kg M3 = 1kg M4 = 2kg M5 = 10kg What are the...
  43. F

    Friction - 3 Blocks and a Pulley

    Homework Statement http://imgur.com/C0XYEKw Homework Equations Fnet = m*a FG = m*g fstatic = μ*N The Attempt at a Solution If both Block 1 and Block 2 have acceleration a in the x-direction and have an acceleration of 0 in the y-direction, then the force of static friction on Block 1 due to...
  44. Drakkith

    Why is the work done by tension on M1 half of the work done by gravity?

    Homework Statement A mass m1 = 5.1 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 5 kg which hangs freely from the string. When released, the hanging mass falls a distance d = 0.83 m. Homework EquationsThe Attempt at a Solution...
  45. R

    Ball Hitting Stationary Blocks

    Homework Statement Objects A and C are made of different materials, with different “springiness,” but they have the same mass and are initially at rest. When ball B collides with object A, the ball ends up at rest. When ball B is thrown with the same speed and collides with object C, the ball...
  46. J

    Three Blocks Connected Concepts

    Unsure what or which answers are incorrect. 1. Homework Statement In the figure below, assume that the pulleys are massless and frictionless. **Attached File** The masses of the blocks are Ma=1.50 kg, Mb=4.00 kg, Mc=6.00 kg, and there is friction between the horizontal plane and Mc, (μk≠0)...
  47. T

    Collision involving blocks and pulley

    Homework Statement Homework EquationsThe Attempt at a Solution When the particle of mass M/2 collides with the pan ,an impulsive tension acts on the (pan+particle) . Let us call this J . Tension acting in the string between the two blocks is T . Speed of particle before collision = u =...
  48. C

    Elastic collision of blocks

    Homework Statement Two blocks collide on a perfectly elastic collision, after sliding on a frictionless surface. va = 1m/s vb = 1m/s ma = 0.05kg mb = 0.03kb I need to find the speed of both blocks after the crash. Homework Equations Conservation of momentum: mava+mbvb = mava' + mbvb'...
  49. SpacemanRich

    Newton's second with Pullys, Ropes, and Boxes (Frictionless)

    Homework Statement [/B]In the drawing, the rope and the pulleys are massless, and there is no friction. Find (a) the tension in the rope and (b) the acceleration of the 10.0-kg block. (Hint: The larger mass moves twice as far as the smaller mass.) 2. Formula's Used. F = ma, W = Mg. The...
  50. Puma

    Any signs of fundamental blocks of energy?

    I would just like to ask a basic question as to whether there is any sign of there being a minimum energy block size which may hint at a fundamental particle building unit, or whether there is just a continuum of energies as far as we know so far.
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