Blocks Definition and 746 Threads

Homework Statement A block of mass m1 = 2 kg and a block of mass m2 = 3 kg are tied together and are pulled from rest across the floor by a force of P = 22 N. The coefficient of friction of the blocks with the floor is µ = 0.26. m1 is on left, pulling force on right Homework Equations...

Three blocks are in contact with each other on a frictionless horizontal surface with m1=1kg m2=2kg m3=3kg A horizontal force of 24N is applied to M1. a) Find the acceleration of the three blocks b) Find the net force on each block c) Find the magnitude of the contact forces...

Homework Statement let's say we have 2 blocks as shown. []->T1----T1-<--[] both blocks are joined by a common rope having a tension T.lets say when the blocks are pulled apart, the tension acts in the direction on the blocks as shown in figure as they try to prevent the sting from...

Homework Statement 2 identical blocks tied together with a string that passes over a pulley at creast of inclined planes One makes an angle of (theta1) 28deg to horizontal other makes angle of (theta2) 62deg to horizontal Homework Equations if no friction, then with what...

urgent-Newton's laws I need help with this question(halliday, resnick and walker, fifth edition, chapter 5 , question 14): PS: I can't draw the figure so I am explaining it as much as possible. 3 wooden blocks are pushed across a frictionless floor.The blocks have masses of 5kg, 2kg and...

Homework Statement A block with mass m_1 = 2 \textrm{kg} slides along a frictionless table with a speed of 10 m/s. Directly in front of it and moving in the same direction is a block of mass m_2 = 5 \textrm{kg} moving at 3 m/s. A massless spring with spring constant k = 1120 N/m is attached...

Homework Statement A block of mass m1 = 2 kg rests on a table with which it has a coefficient of friction µ = 0.56. A string attached to the block passes over a pulley to a block of mass m3 = 4 kg. The pulley is a uniform disk of mass m2 = 0.6 kg and radius 15 cm. As the mass m3 falls, the...

Two blocks with different mass are attached to either end of a light rope that passes over a light, frictionless pulley that is suspended from the ceiling. The masses are released from rest, and the more massive one starts to descend. After this block has descended a distance 1.00m , its speed...

Homework Statement A small box of mass m_1 is sitting on a board of mass m_2 and length L. The board rests on a frictionless horizontal surface. The coefficient of static friction between the board and the box is mu_s. The coefficient of kinetic friction between the board and the box is...

Homework Statement This problem has actually been on here twice (with varying numbers) but not yet solved entirely A 30.0-kg block is resting on a flat horizontal table. On top of this block is resting a 15.0-kg block, to which a horizontal spring is attached, as the drawing illustrates. The...

At work we have these magnetic blocks which have arms attached to them for dial indicators. They are use to hold the dial indicators like an extra pair of hands. They work great. My question is how do they work!? The magnetic block has a switch on it. This switch will turn the magnet on...

Homework Statement I have 2 blocks of mass M one on a frictionless horizontal surface the other hanging over the edge of the surface connected by a string of length l. The string goes over a pulley of mass m. Find the acceleration. Homework Equations PE = mgh KE = 1/2mv^2 The...

Diagram here ---> http://capaserv.physics.mun.ca/msuphysicslib/Graphics/Gtype16/prob25_En_Mom_conserve.gif A spring of negligible mass is compressed between two masses on a frictionless table with sloping ramps at each end. The masses are released simultaneously. The masses have the same...

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, as shown in the figure. The spring is unstretched when the system is as shown...

The question is "Two identical uniform bricks of length 18 cm are stacked over the edge of a horizontal surface with the maximum overhand possible without falling." |<-- 18 cm -->| +-------------+ | block 1 | +-------------+ +-------------+ | block 2 |...

Given: 2 wedge shaped blocks arranged as a rectangle. The bottom block is on a frictionless horizontal surface. Horizontal force Q is applied to the vertical side of the bottom block. Find Q max, the maximum value of Q where there is no slipping, in terms of u[SIZE="1"]s, m, and theta...

Connected Blocks HeLP! I have two questions reguarding connected blocks (that are driving me crazy): 1. Two blocks in contact with each other move to the right across a horizontal surface(frictionless). Determine the magnituede of the force exerted on the 2.2kg block by the 8.2kg block...

The problem is I have two blocks on an inclined plane. They are connected by a metal rod. The bottom(2) mass provides the dominate force. Fiction is involved. They have different kinetic coefficients of friction. I need to know the acceleration of the system and the tension in the rod...

A block of mass 4.0 kg is put on top of a block of mass M = 5.5 kg. To cause the top block to slip on the bottom one, while the bottom one is held fixed, a horizontal force of at least 18 N must be applied to the top block. The assembly of blocks is now placed on a horizontal, frictionless...

Two blocks of masses M and 3M are placed on a horizontal, frictionless surface. A light spring is attached to one of them, and the blocks are pushed together with the spring between them. A cord initially holding the blocks together is burned; after this, the block of mass 3M moves to the right...

Hi everyone, I had couple questions: 1) If I want to proof that egienvectors are linearly indpendent by induction, how do so? I do understand that I can start with a dimension of 1 and assume v1 to be a non zero vector so hence a linear indepedent, what do I do after that for other cases...

Two blocks (M1 = 5kg and M2= 10kg) are pushed so that M1 is not touching the ground (in the air). The horizontal surface is frictionless but there is a friction between the two blocks (mu_k = .4 and mu_s = .5). Find the minimum force F needed so that M1 will remain "in the air" as the blocks...

When I first read this question I thought it would be simple to solve but apparently it's not, I'm having some difficulty with it. "Two blocks can collide in a one-dimensional collision. The block on the left hass a mass of 0.40 kg and is initially moving to the right at 2.4 m/s toward a...

Hi. I'm having a dickens of a time coming up with the correct answer for this. I shall describe the question as it includes an image. There are three blocks altogether, b_1, b_2, b_3, each with a mass m_1, m_2, and m_3, respectively, and the blocks are all connected together by two ropes, T_1...

sorry, couldn't think of a better title anyways, I'm somewhat stuck on 2 questions i have in my homework assignmentfirst one:Three blocks are supported using the cords and two pulleys. If they have weights of WA = WC= W, WB= kW, determine the angle (theta) for equilibrium. Given: k = 0.25...

Two non-parallel light rays initially converge to a single point on a screen. A rectangular block of glass is now placed somewhere in front of the screen, in the path of the light rays, so that the glass surface is parallel to the screen. Where is the new convergence point of the rays? 1...

Hello, Many people talk about "Energy blocks". Many alternative therapies are based on it. We can think something about variations in blood flow as a mechanism of "blood flow controls/regulations" which may alter blood flow, cause cogestions, vasodilations and vasoconstrictions etc. There...

two small blocks are resting (and touching) side-by-side on a frictionless tabletop. the block on the left is connected to a wall to the left of it by a spring having stiffness constant k=75 N/m. the one on the right is connected to a wall on to the right of it by a spring of k=50 N/m. when the...

Two blocks are free to slide along a frictionless wooden track ABC as shown in Figure P9.20. The block of mass m1 = 5.07 kg is released from A. Protruding from its front end is the north pole of a strong magnet, repelling the north pole of an identical magnet embedded in the back end of the...

hey guys, i was wondering if you could please help me question: The coefficient of static friction is 0.60 between the two blocks in figure. The coefficient of kinetic friction between the lower block and the floor is 0.20. Force F_vec causes both blocks to cross a distance of 5.0 m, starting...

Two identical metal blocks resting on a frictionless horizontal surface are connected by a light metal spring having constant of 148 N/m and unstretched length of 0.3 m. A total charge of Q is slowly placed on the system causing the spring to stretch to an equilibrium length of 0.7 m. Determine...

A 4.0 kg block is suspended 1.0 m off the ground and is attached via a pulley and massless rope to a 2.0 kg mass held to the ground. The pulley is .12m in diameter and and has a mass of 2.0 kg. Friction between the axel and pulley exerts a torque or .5 Nm. How long does it take the 4.0 kg...

Two blocks with masses 4.0kg and 8.0 kg are connected by a string and slide down a 30 degree inclined plane. The coefficient of kinetic friction between the 4.0 kg block and the plane is 0.25; that between the 8.0 kg block and the plane is 0.35 a) calculate the acceleration of each block...

"A block of mass m1 = 2.4 kg slides along a frictionless table with a speed of 10 m/s. Directly in front of it, and moving in the same direction, is a block of mass m2 = 4.6 kg moving at 2.8 m/s. A massless spring with spring constant k = 1160 N/m is attached to the near side of m2, as shown in...

Hey dudes and dudettes, loving the forum here. Will be around quite a bit for the next year or so hopefully.. Just a quick question, any help would be appreciated so much.. I'm doing my A2 main coursework, that's the one you do when you're 18 for all the American types, and was wondering...

The 8 kg block A is attached to link AC and rests on the 12-kg block B. Knowing that the coefficient of static friction is 0.20 between all surfaces of contact and neglecting the mass of the link, determine the angle for which motion of block B is impending. Can someone check my equations and...

Could anybody of you be so kind to help me a little bit with understanding what to do in this problem? Thanks in advance for your effort! A mass m2= 10 kg slides on a frictionless table. The coefficients of static and kinetic friction between m2 and m1 = 5 kg are us= 0.6 and uk= 0.4...

Hey, I have been set this question and thought I'd solved it correctly but it turns out I got the answers wrong... A 5.50 g bullet is fired horizontally at two blocks at rest on a frictionless tabletop. The bullet passes through the first block, with mass 1.20 kg, and embeds itself in the...

Here is the question: Block A, with weight 3w, slides down an inclined plane S of slope angle 36.9 degrees at a constant speed while plank B, with weight w, rests on top of A and is attached by a cord to the wall. If the coefficient of kinetic friction is the same between A and B and between S...

Hey, I have been set this question and I'm half-way through answering it but am stuck on where to go next...here's the question: The m1 = 1.1 kg block at rest on a horizontal frictionless surface is connected to an unstretched spring (k = 180 N/m) whose other end is fixed. (See Fig...

Ok I am new this forum so hello to all. Here is the problem that I've been working on. Is this right or wrong and what is the right answer? Two blocks are connected by a rope that wraps around a pulley. A force of 50 N acts on the 5 kg mass at an angle of 36 degrees. 1. what is the...

Two blocks each of length L are piled near the end of the table. What is the maximum distance between the edge of the table and the edge of the outer block before the system topples? I understand that if the center of mass of the system must be to the left of the edge of the table for the...

Problem picture below: http://portfolio.iu.edu/whoblitz/problem2.PNG I know Newton's second law for torque torquenet=I*alpha and regular old Fnet=m*a, but I don't see how they fit together here (how I can account for frictional forces and torque at the same time). Help appreciated...

I've been looking at this question for the last two hours, here's the question and what I've done so far The picture shows 3 blocks, A B and C, block C is ontop of block A. Block B is connected to block A by a rope, and is hanging over the edge. here it is, Blocks A and B have weights...

So, there are two boxes of fruit on a frictionless horizontal surface and are connected by a light string. m1=10kg, m2=20kg. A force of 50N is applied to the 20-kg box. There are two questions to answer, I already answered a: Determine the acceleration of each box, and the tension in the...

I am having trouble with this problem: A block whose weight is 50.0N rests on a horizontal table. A horizontal force of 25.0 N is applied to the block. The coefficients of static and kidnetic friction are 0.510 and 0.350 respectively. Will the Block move under the influence of the force and if...

theres two blocks a 4 KG one and a 5 KG one right next to each other, connected by a c ord, the 5 KG is on the right and its conected to another cord pulling 30 N to the right. so Box1----Box2----30 N get it so theyre asking for the tension in the cord connecting them it slipped my...

Hi , please help me with this question We have 3 blocks on an horizontal surface (frictionless). We apply a force F=8N What are the forces on each 3 blocks. My solution: For the block 1 I found: m1g(down), Normal reaction R1 ( up), R2/1 (left) Here is there an R1/2 (right) force of...

hi i have a question: if you have 2 blocks on a vertical inclined plane... ( with angle teta = pi/2) what would m1 be equal to for a1 and a2 to be = 0 (the answer should be in terms of some or all of the variables of m2 and g) thanks

Consider two blocks, A and B on three surfaces. On each surface, block A is smaller than block B, and always positioned to the left (they are touching, with block B on the right). We have three situations: 1. Block A is pushed to the right on a smooth surface. 2. Block A is pushed to the...