Pulley Definition and 1000 Threads

Homework Statement The system shown is released from rest. Mass one (0.450 kg) rests on mass two (0.820 kg) and the coefficient of static friction between the two masses is 0.560 and the same for the mass and the table. Determine the maximum mass for M(3) such that mass one will not slide on...

So if you have two masses connected by a massless string in a multiple pulley system as shown below, the acceleration will be different right? I ask because when doing normal pulley problems where two masses are connected by a single thread, you assume the acceleration is equal, though the net...

Consider a pulley fixed to the ceiling. A mass-less string is wrapped around it, with each side of the string hanging down either side of the pulley. Since the pulley has friction with the string, tension along the string will vary. Let's say the string is attempting to move clockwise, so the...

Homework Statement Two blocks are connected by a string as in the figure. (below) What is the upper block's acceleration if the coefficient of kinetic friction between the block and the table is 0.18? Express your answer to two significant figures and include the appropriate units. Homework...

Homework Statement The system shown is released from rest. Mass one (0.450 kg) rests on mass two (0.820 kg) and the coefficient of static friction between the two masses is 0.560 and the same for the mass and the table. Determine the maximum mass for M3 such that the mass one will not slide on...

1. A 1 kg block is on a flat frictionless surface. Attached to a relaxed spring (k=50N/m). A light string is attached to the block and runs over a frictionleas pulley to a .45kg dangling mass. If the dangling mass is released from rest, how far will if fall before stopping? Homework Equations...

Homework Statement Note this problem is from Morin 3.28. The atwood machine has two masses, m. The axle of the bottom pulley has two string ends attached to it, as shown. Find the accelerations of the masses. A small diagram is attached below. Note, at the two loose ends of string, there is...

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...

Hello, Im looking to pay around with some pulley equations amount distance and angles and how they alter the pulley lifting power, if anyone could post them or point me in the write direction

1. The problem 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 ##\overrightarrow{F}## shown in the figure. The coefficient of static friction between all surfaces is 0.65 and the kinetic coefficient is 0.37. If...

Homework Statement The 60 lb collar "A" is on a friction-less vertical rod and is connect to a 65 lb counterweight "C". Determine the value "h" (which is the height between "A" and "B") for which the system is in equilibrium. Also, find the horizontal force "N" acting on collar "A". Here is a...

1. Homework Statement An object consists of 3 connected masses as seen in the figure. None of the surfaces have friction except the surface on m1 which has the coefficients μs=0.4 y μk=0.3. What is the acceleration of each one of the masses? It looks like the following image but m1 is the...

Homework Statement An object consists of 3 connected masses as seen in the figure. None of the surfaces have friction except the surface on m1 which has the coefficients μs=0.4 y μk=0.3. What is the acceleration of each one of the masses? It looks like the following image but m1 is the table...

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...

Greetings, lurked for a long time, but I need some help here so I joined up. Please have some patience with me if I miss any important information. I am working on a belted pulley drive system where the driveN pulley will move relative to the driveR while in the stopped state. An outside...

I would like to run 8 pulleys off of one motor. Each "pulley" would be 19" in diameter with 20lb of weight at 30RPM. I would like to know how to calculate the inch-lb that would be required of the motor. I read this on masterdrives.com Torque(inch-lb) = (.03908 x N x W x R^2)/t Where N...

1. Homework Statement The system shown in the diagram contains two blocks, of masses 1.9 kg and 5.7 kg, connected by a light string over a pulley of radius 0.15 m and rotational inertia 2.8 kg m 2 . The block of mass 5.7 kg is free to slide on a horizontal frictionless surface and the pulley is...

Homework Statement (see attatchment) We know masses M and m, and I am trying to describe the downward speed of m in terms of the hight from the ground. There is no friction Homework Equations \sum \text{F} = ma W_{\text{total}} = \Delta K = \int \text{F} \cdot d\text{s} The Attempt at...

Homework Statement A pulley in the shape of a cylinder of mass 5 kg and radius 0.6 m has a force of magnitude 30 N exerted tangentially on it. Find the angular acceleration of the pulley and its angular velocity after 3 s, assuming it starts from rest. Homework Equations T = Ftr T = mr^2a...

I'm currently reading Kleppner and Kolenkow's "Introduction to Mechanics", and I'm working through the problem sets. I'm only on chapter 2, but I happen to know Lagrangian mechanics. When I get stuck on a problem I occasionally take the Lagrangian approach to find the solution, and then I try...

Homework Statement The diagram shows a system of two blocks suspended by ideal strings and pulleys. If the tension of the string attached to block m1 is T, what is the tension of the string attached to block m2?Homework Equations Due to conservation of string, a1/2 = a2 Force balance on mass...

We have a mass M attached to a string. In the other extreme of the string we have a spring. We know the moment of inertia of the alloy I, and it's radius R. We know the constant of the spring k. The string is inextensible. String mass is negligible. There's not friction. There's no slipping...

Homework Statement Block A has a weight of 400N and block B has a weight of 100N. The coefficient of friction between all surfaces of contact are μs = 0.7 and μk = 0.2. Knowing that θ = 60°, determine the acceleration of block A and the tension in the cord. Assume block A is moving downwards...

Tried the problem but answer is not matching with the given answer. Can you tell me what is the correct answer and how you got it? (problem is attached as image)

Homework Statement Two blocks of masses m1 = 8.00 kg and m2 = 12.00 kg are connected by a string of insignificant mass. The string lies on a cylinder of mass 0.50 kg and a radius of 0.15 m. The coefficient of kinetic friction between m1 and the surface of an inclined plane is 0.10. The angle...

Homework Statement A pulley with mass Mp and a radius Rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot. Mass M2 is larger than mass m1. The quantities Tn and g are magnitudes. 1) The magnitude of the acceleration of m1 is ...

Homework Statement http://i.imgur.com/1j19V0n.jpg Two masses are suspended from a pulley as on the pic. I have pulleys radius R and moment of inertia I and masses m1 m2. Homework Equations The Attempt at a Solution So 2nd law of motion: N_{1} - m_{1}g=m_{1}a m_{2}g-N_{2}...

Homework Statement I'm having a bit of trouble understanding something from this: http://gyazo.com/88a466b57d8516d2df1b12008947be43 Homework Equations The Attempt at a Solution I understand how to get the components of reaction at ##A## as well as the tension in segment...

Homework Statement Mass m1 = 14.9 kg is on a horizontal surface. Mass m2 = 7.48 kg hangs freely on a rope which is attached to the first mass. The coefficient of static friction between m1 and the horizontal surface is μs = 0.571, while the coefficient of kinetic friction is μk = 0.105. If the...

Homework Statement My last inclined plane problem has a second part to it: There are some energy problems I need to solve. A double pulley consists of two separate pieces that are welded together; a hoop of radius 10.0 cm and a disk of radius 15.0 cm. The moment of inertia of the pulley is...

Homework Statement A double pulley consists of two separate pieces that are welded together; a hoop of radius 10.0 cm and a disk of radius 25.0 cm. The moment of inertia of the pulley is 0.160 kg-m^2. A 15.0 kg block (m1), on a 35.0° incline, is attached to the outer pulley by a massless...

I am having trouble understanding the distribution of forces present within a pulley system; namely, how the number of sections of rope that supports an item manages to decrease the force necessary to move it. For example, look at this picture I am aware that system A only requires 5...

I am working on a lab that is meant to test the validity of (m1

Homework Statement A step Pulley system is shown in the figure.The string and Pulley are of Negligible Mass.The relation Between the acceleration of Block and Block will be what then ?I am having troubles in approaching this question! Homework Equations The Attempt at a Solution

Homework Statement A uniform flexible chain of mass M and length L is hung under gravity over a frictionless pulley of radius a and moment of inertia I whose axle is at a fixed height above the ground. Write down the Lagrangian of this system in terms of a generalized coordinate l denoting the...

Homework Statement Use conservation of energy to find the final velocity of m1. m1=0.05kg m2=0.02kg m3=0.5kg r=16cm h=2m Homework Equations Kinetic Energy=1/2m*v2 Rotational Kinetic Energy=1/2I*ω2 Gravitational Potential Energy=mgh The Attempt at a Solution 0=(1/2m1v2) +...

Homework Statement A mass M = 53 g hangs from a light, inextensible string. It passes without sliding over a pulley. The pulley can be treated as a solid homogeneous disc with mass mp = 12 g and radius 3.6 cm, that turns without friction on its axis. The other end is attached to a mass m =...

Hello everybody Im trying to calculate the tension in wire (se attached image). the wire is wrapped around a pulley and combined in the end at which you pull with 50 kN. As far as I understand, if youdon´t have this angle so that that the wire ends follow the red dotted line then one can just...

Hi all: I am studying the mechanics of a system where there is string wrapped around a massive pulley, and a block at the end of the string. Correct me if any of this is wrong, but the system (pulley and block) must have the same linear acceleration. So, in the case that the pulley is...

Homework Statement Hi, everyone. Me again. This time I'm here to ask about the tension in the string on a massive pulley. We have a wheel of radius R with a moment of inertia about its principal axis of 2/3 MR2 , suspended above the ground on frictionless bearings. A massless string of...

Hi, i am doing physics 20 and i am still quite new at this stuff. I have a base understanding of how the mass affect the acceleration but i can't find a way to explanation of why the the mass affects the acceleration by making it faster or slower of a pulley for my lab like this one...

Homework Statement I've been stuck on this problem for hours now. I know it has to be somewhat simple, but I am not too great in physics, so I am asking for help on how to complete this problem. Two blocks are positioned on surfaces, each inclined at the same angle 50 degrees with respect...

Homework Statement As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. There is no one around to help, so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. You pull up on the...

Suppose the rope involved in the pulley is massless and experience no friction. Why is the force on the right hand side equal to the tension experienced by the rope on the left hand side?

Homework Statement Three objects are connected on an inclined table. The objects have masses 8.0 kg, 4.0 kg and 2.0 kg as shown, and the pulleys are frictionless. The tabletop is rough, with a coefficient of kinetic friction of 0.47, and makes an angle of 20.0° with the horizontal. The 8.0kg...

Homework Statement Block B, with mass 5.00kg, rests on block A, with mass 8.00kg , which in turn is on a horizontal tabletop. There is no friction between block A and the tabletop, but the coefficient of static friction between block A and block B is 0.750. A light string attached to block A...

Homework Statement Two masses are attached by a light string and looped over two frictionless pulleys. Object 1 (200g) accelerates upwards at a rate of 4.90 m/s squared. Determine mass of object 2. Homework EquationsThe Attempt at a Solution I tries doing this but don't think its right...

Hi all, The problem is shown below - but no answer was given to this, and the teacher did not plan on taking it up, since it was optional extra practice. My attempt at a solution: http://imgur.com/DmrgMMO, my final answer was 2.76 kg. I was wondering if this was right or wrong, and if...

Problem: Block A is suspended from a vertical string. The string passes over a pulley and is attached to block B. The mass of block B is 1.8 kg. The mass of block C is 0.75 kg. If the coefficient of kinetic friction is 0.100 between block B and the ramp and the coefficient of static friction...

Homework Statement Two particles of masses m and 2m lie together on a smooth horizontal table. A string which joins them hangs over the edge and supports a pulley carrying a mass 3m. prove that the acceleration of the latter mass is 9g/17 Homework Equations f=m1g/m1+m2 The Attempt...