Two blocks Definition and 242 Threads

Homework Statement ;Given in the figure are two blocks A and B of weight 20 N and 100 N, respectively. These are being pressed against a wall by a force F as shown. If the coefficient of friction between the blocks is 0.1 and between block B and the wall is 0.15, the frictional force applied by...

Homework Statement A solid block of mass m2 = 8.1 kg, at rest on a horizontal frictionless surface, is connected to a relaxed spring. The other end of the spring is fixed, and the spring constant is k = 230 N/m. Another solid block of mass m1 = 4.0 kg and speed v1 = 5.1 m/s collides with the...

Homework Statement :[/B] block M slides down on frictionless incline .Find the minimum co efficient of friction so that m does not slide with respect to M.Homework Equations :acceleration of the system=total driving force/total mass: [/B] The Attempt at a Solution m does not slide with...

1. I have two blocks, one that is 1.6 kg moving left at 3.00 m/s and the other is 2.1 kg moving right at -1.74 m/s, and they are compressing a block with a spring constant of k=600 N/m. I'm supposed to be finding the distance that the spring is compressed at that instant, and I know that...

Homework Statement A massless rope is attached to Block A, which as mass m_A and rests on a horizontal surface with coefficient of kinetic friction u_k. The rope passes over a frictionless, massless pulley and Block B is attached to the other end. When the blocks are released, Block A moves to...

Homework Statement Suppose a block of Uranium and a block of Radium, both with edge length \lambda , are pushed to the head of an un-stretched spring (spring constant k , un-stretched length \delta _0 ). The combination, pushed \delta farther, compresses the spring. Upon release, the...

Homework Statement Two masses M1 = 6.90 kg and M2 = 3.10 kg are on a frictionless surface, attached by a thin string. A force of 48.1 N pulls on M2 at an angle of 31.3° from the horizontal as shown in the figure. Calculate the tension T in the string. Homework Equations T=ma a=g(m2/(m1+m2))...

Homework Statement The problem is from a worksheet and is a picture so I will try to describe the picture. A 3kg block and a 7kg block are connected by a rope and the 7kg block is falling from a table and the 3kg block is on the table. We are supposed to find the acceleration of the 3kg block...

1. Homework Statement A 3.0-kg block sits on top of a 5.0-kg block which is on a horizontal surface. The 5.0-kg block is pulled to the right with a force ##\vec{F}##. The coefficient of static friction between all surfaces is 0.63 and the kinetic coefficient is 0.38. What is the minimum value...

Homework Statement Block 1, of mass m_1 =2.6kg and block 2 of mass m_2=1.4kg are connected by a massless string. Block 2 then experiences a force F=18N acting in the postivive x direction and at an angle of \theta = 38° . The coefficiant of kinetic friction between the floor and both of the...

Homework Statement Look at the figure below. Derive the formula for the magnitude of the force F exerted on the large block (mC) in the figure such that the mass mA does not move relative to mC. Ignore all friction. Assume mB does not make contact with mC. Homework Equations F = ma...

Homework Statement In the diagram mA is equal to 3.00 kg and mB is equal to 1.07 kg. The angle of the inclined plane is 38.0° (a) Find Acceleration: 6.03 m/s^2 (got this part) (b) Find the tension Tb in the connecting string: Not sure Homework Equations (a) a = (F/mA + mB) (b) t =...

Homework Statement Mass Ma lies on top of mass Mb, as shown. Assume Mb > Ma. The two blocks are pulled from rest by a massless rope passing over a pulley. The pulley is accelerated at rate A. Block Mb slides on the table without friction, but there is a constant friction force f between Ma and...

Homework Statement There are two blocks against a wall on a frictionless table. I can't really manage a diagram, so please imagine this. There are two blocks, one of 5 kg and another of 10 kg, against each other. The 10 kg one is touching the wall. The frictional coefficient between the...

Homework Statement Mass 1(2.0kg) sits on top of mass 2(5 kg), which rests on a frictionless surface. The coefficient of static friction between mass 1 and 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 max speed...

Homework Statement Two blocks with masses m1 and m2, m2>m1, are attached, I push from the left and from the right side, which force is bigger? The surface is frictionless. http://imagizer.imageshack.us/v2/800x600q90/194/wkft.png 2. The attempt at a solution I think it's bigger when...

Homework Statement A block of mass m, is suspended by a spring with a spring constant k and stretches a length x . If two blocks of mass m/2 are suspended by a spring with the same spring constant k (ii), how much will the spring stretch...

1. Would you correct, revise my problem please? Two Blocks sit on a symmetric double slope. Rightmost block has twice the mass of the of the other block, and the angle that each side makes with the horizontal is the same. a) Suppose that there is no friction. and suppose that the slope...

The problem and solutions: http://i.imgur.com/hxlfbmZ.png I was able to solve the first two questions, but I guessed part C. For the first one, I thought of the two blocks as one unit (since there's no friction or air resistance). If they're both falling with the same acceleration, there...

Hello all, I have two blocks, and I want to draw multiple parallel lines between them. This is the Latex code I have \documentclass{article} \usepackage{tikz} \usetikzlibrary{shapes,arrows,fadings, shadows} \usepackage{amsmath,bm,times} \begin{document} \pagestyle{empty}...

Homework Statement The figure shows two packages that start sliding down a 20 degree ramp from a rest a distance d=6.6m along the ramp from the bottom. Package A has a mass of 5.0kg and a coefficient of friction 0.20. Package B has a mass of 10kg and a coefficient of friction of 0.15. How...

Homework Statement http://i.imgur.com/K2hYHgq.png Picture here with question. Homework Equations F=ma The Attempt at a Solution For the system to begin moving, a>0 therefore Fnet>0 I drew some FBDs and came up with four relevant forces total; the force of gravity along the...

Homework Statement The figure shows a 100 kg block being released from rest from a height of 1.0 m. It then takes 0.90 s to reach the floor. What is the mass of the block on the left? Illustration shows a pulley connected to the ceiling, with a block of 100 kg on the right, and a...

Homework Statement A 2.00kg aluminium block and a 6.00kg copper block are connected by a light string over a frictionless pulley. They sit on a steel surface, which is fixed, as shown in the figure, with a (let it be alpha lol) = 43.0deg. The coefficient of static friction for aluminum on steel...

http://puu.sh/4DtNc.png I solved this question, but I don't understand why this worked. I feel like for the final line in my solution it should just be divided by M1, not the combined mass of both blocks. Isn't this synonymous with just M1 being pulled up the ramp by a guy at the top...

Hi guys, it's my first time posting here so please forgive me for anything wrong! Homework Statement A block of mass m = 0.570 kg rests on top of a block of mass M = 2.30 kg. A string attached to the block of mass M is pulled so that its tension is T = 6.20 N at a 20 degree angle to the...

Homework Statement A system is composed of two blocks of mass ##m_1## and ##m_2## connected by a massless spring with spring constant k. The blocks slide on a frictionless plane. The unstretched length of the spring is ##l##. Initially ##m_2## is held so that the spring is compressed to...

Homework Statement Two bars of masses ##m_1## and ##m_2## connected by a weightless spring of stiffness ##k## rest on a smooth horizontal plane. Bar 2 is shifted a small distance ##x## to the left and then released. Find the velocity of the centre of inertia of the system after bar 1 breaks off...

Homework Statement Blocks A and B are connected by a cable that passes over support C. Friction between the blocks and the inclined surfaces may be neglected. Knowing that motion of block B up the incline is impending when mB = 4.5 kg, determine: (a) the coefficient of static friction...

[b]1. Two masses of m1 and m2 is connected by a massless undeformed spring rest on a horizontal plane.Find the minimum constant force Fmin that has to be applied on m2 so that other block get shifted if D is the coefficient of friction between blocks and surface [b]2. Homework Equations...

1. Two blocks made of different materials connected together by a thin cord, slide down a plane ramp inclined at an angle θ to the horizontal. The masses of the blocks are mA and mB and the coefficients of friction are μA and μB. PART A If μA < μB, determine a formula for the acceleration of...

What is the force of contact between the two blocks? Two blocks are in contact on a horizontal table. A force is applied on one of the blocks at a 30 degree angle (from the horizontal). The system moves towards the right. M1 = 2,00 kg and m2 = 1,00 km and F=60N and the kinetic friction between...

1. Two blocks, of masses M = 3 kg and m = 2 kg, are in contact on a horizontal table. A constant horizontal force of magnitude F = 5 N is applied to block M as shown. There is a constant frictional force of magnitude f = 1 N between the table and the block m, but no frictional force between the...

1. Homework Statement Two blocks (m1=4.0kg, m2=7.5kg) are attached by a light cord pulled along a horizontal surface by a force of 53N as shown in the diagram. If the coefficient of friction between the blocks and the surface is 0.30, what is the tension in the rope between the two blocks...

Homework Statement What force must be applied in the car of the image in order to all blocks remain stationary in relation to the car? Supposed that there's no friction in all surfaces, pulleys and wheels. Homework Equations Fr = ma The Attempt at a Solution First thing: That's a...

Find the tension T of the two blocks. I think I'm doing something wrong :( T1 = m1g = (2)(9.81) = 19.62 T2final = T2 + T1 = m2g + m2g = (3)(9.81) + (2)(9.81) = 29.43 + 19.62 = 49.05 I did something wrong. :( Help?

Homework Statement Two blocks of mass m1 and m2 on a ramp with a frictionless surface? PLEASE HELP!? A diagram shows two blocks of mass m1 and m2 on a ramp with a frictionless surface. The blocks are connected by a massless string over a massless frictionless pulley. The ramp makes an angle...

Homework Statement The coefficient of static friction between two blocks is .60. The coefficient of kinetic friction between the lower block and the floor is .20. If a horizonatal force is applied to the upper block (m=4kg) what is the minimum amount of time the two blocks (m=7kg) can cover...

Greetings Fellow Physics lovers! I was wondering if somebody could please check my work on this problem. A 5 kg block traveling at 10 m/s collides into a stationary 2 kg block. Find the final velocities of the two blocks after the elastic collision. V1f=(m1-m2)/(m1+m2) (V1i)...

Homework Statement A block of mass 7.18 kg lies on a frictionless horizontal surface. The block is connected by a cord passing over a pulley to another block of mass 5.6 kg which hangs in the air, as shown. Assume the cord to be light (massless and weightless) and unstretchable and the pulley...

A 6.0kg box is on a frictionless 35° slope and is connected via a massless string over a massless, frictionless pulley to a hanging 2.0kg weight. What is the tension in the string if the 6.0kg box is held in place, so that it cannot move? m1= 6.0kg m2= 2.0kg θ=35° So, for Box 1 to be...

Homework Statement Two blocks of masses m1 and m2, with m1 > m2, are placed in contact with each other on a frictionless, horizontal surface. A constant horizontal force is applies to m1. a) find the magnitude of the acceleration b) determine the magnitude of the contact force between the...

Homework Statement A block with mass m1 = 9.4 kg is on an incline with an angle θ = 31.0° with respect to the horizontal. Now a new block is attached to the first block. The new block is made of a different material and has a coefficient of static friction μ = 0.9. What minimum mass is...

Homework Statement Two blocks A and B ,each of same mass are attached by a thin inextensible string through an ideal pulley.Initially block B is held in position as shown in figure.Now the block B is released .Block A will slide to right and hit the pulley in time t1. Block B will swing and...

Homework Statement Blocks of mass and are connected by a massless string that passes over the pulley in the figure . The pulley turns on frictionless bearings, and mass slides on a horizontal, frictionless surface. Mass is released while the blocks are at rest. Homework Equations...

Homework Statement (Sorry if I used any wrong term, English isn't my first language) Be A (mass M) and B (mass m) two blocks connected to each other through an ideal wire passing through a wheel (caster), each block stays at one of the side of the wheel. If we apply a force F pointing up into...

Homework Statement Two blocks A and B with respective masses m_{A} and m_{B} with respective masses m_{A} and m_{B} are connected via a string. Block B is on a frictionless table, and block A is hanging at a vertical distance h from a spring with spring constant k that is at its equilibrium...

Homework Statement A block of mass 2.0kg rests on top of another block of mass 10.0kg that itself rests on a frictionless table. The largest frictional force that can develop between the two blocks is 16N. Calculate the largest force with which the bottom block can be pulled so that both...

1. A block with mass m1 is placed on an inclined plane with slope angle α and is connected to a second hinging block with mass m2> m1 by a massless cord passing over a small frictionless pulley. The coefficient of kinectic freiction between mass ma and the incline is negligible. Find: (a) the...

Homework Statement A block of mass M_2 can move over another bigger block M_1=5.0M_2 . The coefficient of static friction between the small and big blocks is \mu _s=0.40 , the kinetic coefficient between them is \mu _{k,2}=0.30 , and the kinetic coefficient between the big block and the floor...