Blocks Definition and 746 Threads

The figure shows two 1.0 kg blocks connected by a rope. A second rope hangs beneath the lower block. Both ropes have a mass of 250 g. The entire assembly is accelerated upward at by force. What is F? What is the tension at the top end of rope 1? What is the tension at the bottom end of rope 1...

[SOLVED] conservation of energy Homework Statement Two blocks, of masses M = 1.9 kg and 2M are connected to a spring of spring constant k = 220 N/m that has one end fixed, as shown in the figure below. The horizontal surface and the pulley are frictionless, and the pulley has negligible mass...

Homework Statement Two blocks of mass m1 and m2 (m1 > m2) slide on a frictionless floor and have the same kinetic energy when they hit a long rough stretch (coeff. of kinetic friction > 0), which slows them down to a stop. Which one goes farther? Homework Equations W = Fd..iono...

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 1.40 , its speed is...

Homework Statement Block 1 of mass 0.200 kg is sliding to the right over a frictionless elevated surface at a speed of 8.00 m / s as shown in the figure below. The block undergoes an elastic collision with stationary block 2, which is attached to a spring of spring constant 1208.5 N / m...

Homework Statement Block A is on top of Block B, which is on a frictionless incline. The mass of Block A is less than that of Block B. The positive x-direction is defined to be up the ramp. During the interval from t1 to t2 a hand exerts a constant force on block A in the positive...

Homework Statement 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...

The blocks shown have equal mass and are made of the same material,and the velocity is the same in each figure. The total frictional force on the blocks are A. Greater in C than in A or B B. The same in C and A C. The same in A,B, C D. The same in A and B E. The same in C and B. Isnt...

Homework Statement There are three blocks on a table. They are connected by a massless cord and pulled to the right. From rigt to left, it follows: T3, block 3, T2, block 2, T1, block 1 m1: 2.5kg m2: 9.5kg m3: 1.5kg mu kinetic: .051 The pulling force is equal to T_3 = 98.0 N. What is...

[SOLVED] Friction and blocks Homework Statement Three blocks are attached by cords that loop over frictionless pulleys. Block B lies on a frictionless table; the masses are mA=6kg, mB=6kg, and mC=18kg. The accleration due to gravity is g. Homework Equations F=ma The Attempt at a...

Homework Statement Three blocks are in contact with each other on a frictionless, horizontal surface, as in Figure P5.54. A horizontal force F is applied to m1. Take m1 = 2.00 kg, m2 = 3.00 kg, m3 = 4.00 kg, and F = 22.0 N. (c)What is the magnitude of the contact force between m1 and m2...

Two blocks are in contact on a frictionless table. A horizontal force F is applied to M2, as shown. If M1 = 1.51kg, M2 = 3.96kg, and F = 4.55N, find the size of the contact force between the two blocks. So first I found the acceleration (F=ma) 4.55/(1.51+3.96) = 0.83 = acceleration Im...

SOLVED :) Homework Statement https://tycho-s.phys.washington.edu/cgi/courses/shell/common/showme.pl?courses/phys114/winter08/homework/04d/2blocks_incline_NWT/5.gif The figure shows two identical blocks tied together with a string which passes over a pulley at the crest of the inclined...

Hope someone can help me with this one. I have two blocks with m1 and m2 connected to two pulleys. I need to figure out T1, T2, a1, and a2 using only the values of g, m1, and m2. But I've been unable to come up with an equation that will work with it. I have a picture attached. I tried using...

[SOLVED] Contact Force Homework Statement a.Two blocks are in contact on a frictionless table. A horizontal force F Is applied to M[SIZE="1"]2. The force's magnitude is 4 N. [The diagram shows the force pushing on the left side of M[SIZE="1"]2, which has M[SIZE="1"]1 on its right side.]If...

Homework Statement M1 and M2 are two masses connected as shown. The pulley is light (massless) and frictionless. Find the mass M1, given that M2 (3.5 kg) accelerates downwards at 3.35 m/s^2, θ is 35o, and μk is 0.25. http://img525.imageshack.us/img525/7076/prob31fricpullplaneyi0.gif...

Hello everyone, new to the forums but I have used the information here for help in the past. Having trouble with a specific part of a problem.1. A 0.65 kg block of ice is sliding by you on a very slippery floor at 2.5 m/s. As it goes by, you give it a kick perpendicular to its path. Your foot...

1. A pulley A on the end of a spring balance. On 1 end is a 16kg mass. On the other is pulley B. On one end of pulley B is a mass of 4kg. On the other end is pulley C. On one end of pulley C is a 1kg mass. On the other end is a 7/3kg mass. All pulleys are massless and frictionless. Find accn. of...

You are given that the coefficient of kinetic friction between the block and the table in the figure is 0.560, and m1 = 0.150 kg and m2 = 0.250 kg. (a) What should m3 be if the system is to move with a constant speed? this is what i have: T2 - T1 - f = m3a m2g - m1g - ukg = m3 2.45 - 9.65 -...

Homework Statement Block A of mass, mA = 2.0 kg, is moving on a frictionless surface with a velocity of 5.0 m/s to the right and another block B of mass, mB = 8.0 kg, is moving with a velocity of 3.0 m/s to the left, as shown in the diagram below. The two block eventually collide. a. If...

A tale of two blocks. "HELP!" Homework Statement The system shown below consists of two identical blocks of mass M connected by a massless, flexible string of length 2L. The string passes through a massless pulley which is fixed to the corner of the supporting table. The string and the...

Problem # 2 The pulley shown in the figure below, which is mounted in horizontal frictionless bearings, has a radius of 5.00 cm. One block has mass M = 500 g and the other has mass m = 460 g. When released from rest, the more massive block falls 75 cm in 5.00 s (without the cord slipping on...

Two blocks, m1= 1kg and m2 = 2kg, are connected by a light string as shown in the figure (the figure is just shows a pulley with 2 blocks on each sides). If the radius of the pulley is 1m and its moment of inertia is 5kg*m^2, the acceleration of the system in g is: I have no idea how to do...

Homework Statement Two blocks, A and B, are connected by a compressed string. The mass of bock A is twice that of block B. Immediately after release, compare the net force on block A to the net force on block B. The table is frictionless and the mass of the spring is zero. 1)There is no...

Hi, this is my first post, so please tell me if I'm doing anything incorrectly...thanks. Homework Statement Three blocks are connected, as shown in Fig. 5-47, on a horizontal frictionless table and pulled to the right with a force T3 = 64.9 N. Assume that m1 = 12.1 kg, m2 = 24.5 kg, and m3...

Blocks with light springs (q31) Hi, I have not idea how to do the following problem(all attempts failed): http://tinyurl.com/28lahv Can somebody help?

Homework Statement I'll describe this without the numbers, values and such. The issue here is to understand the logic worked on this problem...well any problem is like that. Anyhow, this is the situation: A block of mass m1 is stacked on the surface of another block of mass m2 of width L...

Homework Statement Consider a system of two blocks that have masses m_1 and m_2. Assume that the blocks are point-like particles and are located along the x-axis at the coordinates x_1 and x_2. In this problem, the blocks can only move along the x axis. Find the x coordinate of the center of...

Two identical blocks, each of mass M, are connected by a light string over a frictionless pulley of radius R and rotational inertia I. One block is on a horizontal plane, one is dangling at the end of the string. The string does not slip on the pulley, and it is not known whether or not there...

Homework Statement Blocks with masses of 1 kg, 2 kg, and 3 kg are lined up in a row on a frictionless table. All three are pushed forward by a 12 N force applied to the 1 kg block. How much force does the 2 kg block exert on the 3 kg block? How much force does the 2 kg block exert on the...

Homework Statement What is the acceleration of the 2.0 kg block across the frictionless table http://s167.photobucket.com/albums/u143/grapz720/?action=view&current=phy.jpg Homework Equations I know the acceleration is positive for one block and negative for the other. F= ma , also...

Two blocks with masses m1 = 1.2 kg and m2 = 3.5 kg are at rest on a frictionless surface with a compressed spring between them. The spring is initially compressed by 65.0 cm and has negligible mass. When both blocks are released simultaneously and the spring has dropped to the surface, m1 is...

This is the problem: Three blocks on a frictionless incline are in contact with each other as shown in the following figure. A force F is applied to block 1 (mass m1), so the whole system moves up the incline. a) Draw a free body diagram for each block. b) Determine the acceleration of the...

Homework Statement Three odd-shaped blocks of chocolate have the following masses and center-of-mass coordinates: (1) 0.310 kg, ( 0.200 m, 0.310 m); (2) 0.410 kg, ( 0.110 m, -0.380 m); (3) 0.200 kg, ( -0.280 m, 0.610 m). Find the x coordinate of the center of mass of the system of three...

Homework Statement The two blocks, m1 = 3.3 kg and m2 = 4.2, in the figure below are connected by a massless rope that passes over a pulley. The pulley is 12 cm in diameter and has a mass of 2.0 kg. As the pulley turns, friction at the axle exerts a torque of magnitude 0.35 Nm. If the blocks...

A block of mass m1 = 3 kg rests on a table with which it has a coefficient of friction µ = 0.7. A string attached to the block passes over a pulley to a block of mass m3 = 5 kg. The pulley is a uniform disk of mass m2 = 0.4 kg and radius 15 cm. As the mass m3 falls, the string does not slip on...

Homework Statement Basically, everything is on this link. I'm not sure where to start with it. http://hsfs2.ortn.edu/myschool/_APphysicsB/B_Newtons_Laws_II/Homework%20Folder/Assignment%20%235%20(FR%20Packet%20%234)%20-%20blank.pdf Help would be really appreciated!

Homework Statement Pulley System: B-------O //// ////// | | | | | | ---O--- | B O = Pulley B = Block Find the acceleration of each block in terms of m1,m2 and g. Homework Equations F = ma The Attempt at a Solution I drew free body diagrams for each block...

Homework Statement Two blocks connected by a cord passing over a small, frictionless pulley rest on frictionless planes: Which way will the system move when the blocks are released from rest? Right or left? What is the acceleration of the blocks? What is the tension in the cord? Homework...

A friend of mine gave me this problem, and it was somewhat hard: A rectangular block of mass M1 rests on a horizontal table. Masses M2 and M3 are free to slide along the surfaces of M1 and are attached by a massless string over a frictionless pulley. For the diagram, go to...

Homework Statement In Fig. 6-48, block 1 of mass 1.8 kg and block 2 of mass 2.9 kg are connected by a string of negligible mass and are initially held in place. Block 2 is on a frictionless surface tilted at = 38o. The coefficient of kinetic friction between block 1 and the horizontal surface...

Homework Statement In Fig. 6-35, blocks A and B have weights of 51 N and 23 N, respectively. (a) Determine the minimum weight of block C to keep A from sliding if μs between A and the table is 0.23. (b) Block C suddenly is lifted off A. What is the acceleration of block A if μk between A and...

Fig. 5-1a shows two blocks on a smooth surface. A constant horizontal force Fa is applied to block A, which pushes against block B with a 28.0 N force horizontally to the right. In Fig. 5-1b, the same force Fa is applied to block B so that block A pushes on block B with a 14.0 N force...

Two blocks are connected by a massless string and are held in position by another massless string along a frictionless incline (as shown in the figure). Let M1 = 39.0 kg, M2 = 37.0 kg, and θ = 36°. Calculate the tension in the string connecting the two blocks. Calculate the tension between...

Homework Statement A pulley is a uniform cylindrical disk of mass m and radius r. The strings are massless and there is no friction. If the system is initially at rest, find the speed of the blocks (m1 and m2) after they have moved a distance d. m1----------0 **********l **********l...

Homework Statement In http://session.masteringphysics.com/problemAsset/1007030/9/yf_Figure_5_72.jpg I have to find the number of revolutions per minute at which the lower cord goes slack. The Attempt at a Solution I just need to be sure: What they are asking me to find is the number...

Homework Statement Consider a smooth vertical wall against which a block is placed.Another block is also placed in contact with the earlier inner block.An external force F is acting horizontally on the outer block towards the wall.There is friction between the two blocks,but no friction...

Homework Statement Two forces acting on two blocks A and B are connected with a string between them. Force FA = (16 N) acts on block A, with mass 5.2 kg. Force FB = (24 N) i acts on block B, with mass 6.0 kg. What is the tension in the string? Homework Equations F = ma The...

Homework Statement A block with mass 6.00kg resting on a horizontal surface is connected by a horizontal cord passing over a light frictionless pulley to a hanging block with mass 4.00kg. The coefficient of kinetic friction between the block and the horizontal surface is 0.50. After the blocks...

Homework Statement block A is ontop of block B. block A more mass than B Which force is greater magnitude, Force of gravity (mg (weight) on block B, or force of block A on B? Wouldnt answer have to be Faonb because both blocks are subject to gravity? Homework Equations The...