pulley problem Definition and 172 Threads

hi can some one please help me with this for an exam? A 33.5 kg block (m1) is on a horizontal surface, connected to a 7.10 kg block (m2) by a massless string. The frictionless pulley has a radius R = 0.081 m and a moment of inertia I=0.110 kgm2. A force F = 244.9 N acts on m1 at an angle θ...

Help urgently need someone to help me check pulley problem Two masses are connected over a small pulley using a light string. The mass on the left is 1.00 kg and the mass on the right is 6.50 kg. The mass on the right is a distance 2.00 m above the ground. The system is released from rest as...

Homework Statement A child has a toy of weight 100N which is attached to a string. The toy is initially at rest on a rough horizontal plane. The child picks up the string and pulls it so that the string makes an angle of 16 degrees with vertical. If the coefficient of friction between the...

Homework Statement The pulley in Fig. 9-25 has radius 0.150 m and moment of inertia 0.440 kg·m2. The rope does not slip on the pulley rim. Use energy methods to calculate the speed of the 4.00 kg block just before it strikes the floor. Figure: http://www.webassign.net/yf9/9-25.gif...

Homework Statement A 29.3 kg block, m1, is on a horizontal surface, connected to a 6.70 kg block, m2, by a massless string as shown. The frictionless pulley has a radius R = 0.055 m and a moment of inertia I = 0.100 kg·m2. A force F = 202.5 N acts on m1 at an angle θ = 29.7°. There is no...

Homework Statement I have a drawing that has two masses (unequal) hanging from a string that passes over a pulley. There is an acceleration acting on each of the forces in opposite directions. Assuming that the only given information is the masses (one is M=12 kg and the other is m=6 kg) how...

Homework Statement mass 1=mass 2= 5 theta=30 Mass 1 and mass 2 are connected by a rope on a pulley. Mass 1 is on an incline of 30 degrees, and mass 2 is hanging vertically. Find the tension of The Attempt at a Solution mgsin(theta)= force of gravity of mass 1 down the incline...

1. 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 rope to lift the...

A friend and I were imagining a physics problem for fun: A 3kg rectangular cart has a pulley system on its front edge. 1kg weight suspended is down the front, and it's attached by a rope through a mass-less pulley to a 1kg mini-cart on top of the cart. There is no friction between the ground...

Homework Statement Block A has mass m = 4.0 kg, and block B has mass m= 2.0 kg. The coefficient of kinetic friction between block B and the horizontal plane is 0.50. The inclined plane is frictionless at the angle 30 degrees and Block A sits on it. The pulley serves only to change the...

Homework Statement Two blocks are connected over a pulley. The mass of block A is 10 kg, and the coefficient of kinetic friction between A and the incline is 0.20. Angle theta of the incline is 30 degrees. Block A slides down the incline at constant speed. What is the mass of Block B...

Homework Statement M1 has a mass of 6.51 kg. It is on a horizontal surface, connected by a light string to a hook. Mass M2 can be increased smoothly by adding masses little at a time. The pulley has a negligible mass and no friction. When M2 is 3.12 kg it begins to accelerate downwards...

What is the tension in the string when the mass of m1 is 15.50 kg and m2 is 1.75 kg?

Homework Statement A 47N weight is pulled on a frictionless surface by a frictionless pulley that is attached to a 25N weight by a cord. A. What is the acceleration of the 47N weight? B. What is the force on the cord? Homework Equations F=ma The Attempt at a Solution A...

Homework Statement Given data: Gravity= 9.8 m/s2 Mass of bricks= 136 kg Mass of barrel= 15.5 kg Mass of barrel and bricks= 151.5 kg Mass of worker= 74.2 kg Time= 2.95s The problem The acceleration of gravity is 9.8 m/s2 . To emphasize the fact that lessons learned in 303K carry over into...

Homework Statement If the 1.5 kg block is suspended from the pulley B and the sag of the cord is d = 0.15m, determine the force in cord ABC. Neglect the size of the pulley The Attempt at a Solution They don't even give an angle, I am not sure how I am supposed to do this.

Homework Statement A pulley is used in an experiment. A small block is attached to a string, the other end of which is attached to a pulley and wrapped around it several times. The block is released from rest and takes time t to fall the distance D to the floor. Using quantities given in the...

Homework Statement .........__m5____ ...|\....../....| ...|..\....../...| ..m1.|...m2....m4...|.m6 ...|...\..../.....| ...|...45.\___m3___/30...|- All the boxes (m1, m2, m3, m4, m5) are connected by strings. - m2 and m4 are leaning on the wall. - m3 and m5 are standing - m1 and m6 are hanging...

Homework Statement Two weights are connected by a very light flexible cord that passes over a 50.0 N frictionless pully of radius .300 m. The pulley is a solid uniform disc connected by a hook to the ceiling. What force does the ceiling exert on the hook? (In the picture shown is the...

Homework Statement we did a lab on pulleys. The weight lifted was 19.62 N. It rose 0.20 meter with us applying a lifting force of 11 N and pulling the rose a distance of 0.16. The Attempt at a Solution I tried to find the efficiency of the pulley, so E=work out/work in so work...

Homework Statement A 75.0 kg mass sits on an inclined plane, and a rope passing over a pulley at the top connects it to a hanging 125 kg mass. The pulley is frictionless and its mass is negligible. The coefficient of friction between the 75.0 kg block and the plane is 0.143. The system is...

Homework Statement See Picture, The problem gives three boxes(M1, M2, and M3) and a few pulleys, no value for the coefficient of friction is given. None of the masses are known, and we are told to assume M1 and M3 are sliding. The objective is to find Ft (if you can't see that well...

Hi, I've been working on this problem for more than 4 hours now. and I haven't got a clue on how to finish the problem. ANY help would be tremendously appreciated! Thanks! Homework Statement a pulley has a circumference of 1.20m and mass of 2.25kg. pulley is a solid uniform disk. a heavy...

1. A 28.0 kg block is connected to an empty 1.35 kg bucket by a cord running over a frictionless pulley. The coefficient of static friction between the table and the block is 0.450 and the coefficient of kinetic friction between the table and the block is 0.320. Sand is gradually added to the...

Homework Statement A pulley hangs from the ceiling. A string is run over the pulley and one end is attached to the ceiling, while a 10 lb weight hangs from the other end. In between the first pulley and the end of the string that is attacked to the ceiling rest another pulley on the string...

A 20 kg monkey holds on to a rope that passes over a frictionless pulley and is attached to a 20 kg bunch of bananas. The monkey starts to climb the rope to get the bananas. a. as the money climbs, do the bananas move up, down, or remain at rest? b. as the money climbs does the distance...

Homework Statement An object of mass m1 on a frictionless horizontal table is connected to an object of mass m2 through a very light pulley P1 and a light fixed pulley P2. (a) If a1 and a2 are the accelerations of m1 and m2, respectively, what is the relation between these accelerations...

I came across this problem recently. It's a pulley problem, albeit a slightly unusual one. The situation is sort of hard to explain without a diagram, but I'll do my best. There's a pulley on the edge of a table, and there's a string that's stretched across it. The string has two weights...

on either side of a pulley hung from a ceiling, i hang weights, on the left side, i hang a mass of 4kg,? on the right side i hang a mass of 4kg and another mass of 2kg, now there is acceleration towards the right side, correct? next phase, after a certain amount of time, i disconnect the...

In the below case, in dynamics, how do i solve this pulley problem using Newtons laws? http://picasaweb.google.co.uk/devanlevin/Album/photo#5219794055569750146 what is the acceleration of each of the bodies? the hanging body has a mass of 2kg the lying body has a mass of 3kg the cords...

"A 20 kg block, m1, is sliding on a 10 kg block, m2. The blocks are on a 20º slope and are connected by a light string looped over a pulley. " All surfaces are frictionless and the string/pulley are massless. I understand that the 20kg block should slide down since it should have a greater...

A string that passes over a pulley has a .301kg mass attached to one end and a 0.635 kg mass attached to the other end. The pulley, which is a disk of radius 9.50cm, has friction in its axle. What is the magnitude of the frictional torque that must be exerted by the axle if the system is to be...

[SOLVED] Pulley problem (Rotation) Mass m1 = 9.07 kg sits on a frictionless, horizontal surface. A massless string is tied to m1, passes over a pulley (a solid disk of mass Mp = 5.42 kg and radius Rp = 37.9 cm), and is tied to m2 = 6.94 kg hanging in space. Find the acceleration of the masses...

Hi, I'm trying to work through a pulley problem in Hibbeler's Statics and Dynamics (11th edition). I'm working on 13-26 for those who have the text. The problem in involves a block, A of weight 100-lbs moving down an incline at 5 ft/s. It's attached to a pulley system with the first pulley...

Here is the problem; The 40-lb block is moving downward with a speed of 3 ft/s at t=0 when constant forces P and 2P are applied through the ropes. Knowing that the block is moving upward with a speed of 2 ft/s when t=4 s, determine (a) the magnitude of P. (b) the time at which the speed is 0...

please refer to attachment for question =)

I have a question on a pulley problem; the problem looks like this: M (10) ...O ------------|... xxxxxxxxxxxx|... xxxxxxxxxxxx|m (2.5) xxxxxxxxxxxx|... With the: O being a frictionless pulley - being solid ground . Being a rope M a mass of...

[SOLVED] Multiple pulley problem Homework Statement **Image of apparatus http://www.learning.physics.dal.ca/library/Graphics/Gtype09/neck.jpg When a patient's injured neck is healing, it is often desirable to prevent the weight of the head from pushing down on the neck. This can be...

This has been frustrating me: Problem: The pulley in the figure is essentially weightless and frictionless. Suppose someone holds on to m=10.0 kg and accelerates it upward at 4.905 m/s/s. What will then be the tension in the rope given that M=10.0 kg? Attempt: The sum of the forces...

A man standing on a platform with an attached frictionless pulley is supporting himself at a fixed position in midair (zero acceleration). What force F is required to do this? Solve for F for a man of arbitrary mass M, and a platform plus pulley of arbitrary mass m. So, since a = 0 : Fnet =...

I have a question about a question; I know how to solve it, but I want to know why I can't do something to get the answer: Problem is: Standard pulley problem setup. A mass, M, equaling 2.00 kg is on top of a table with a frictionless surface. A second mass, m, equaling 10.0 kg, is...

Homework Statement I will provide links to the problem because it's in the book. Here's a scan out of my book: http://img228.imageshack.us/img228/3899/number18qy6.jpg Homework Equations I have them all listed on my scans of my work. The Attempt at a Solution Here are scans of...

Ok, here is the problem: A man is sitting in a bosun's chair that dangles from a massless rope, which runs over a massless, frictionless pulley and back down to the man's hand. The combined mass of man and chair is 89.6 kg. With what force magnitude must the man pull on the rope if he is to...

a pulley is suspended by a cord with two masses attached. one mass is 1.2 kg. the second mass is 3.2 kg. the two masses are attached on different sides. the question: determine the tension in this cord after the masses are released and before one hits the ground. ignore the mass of the pulley...

A massless string is placed over a massless pulley, and each end is wound around and fastened to a vertical hoop. The hoops have masses M1 and M2 and radii R1 and R2. The apparatus is placed in a uniform gravitation field g and released with each end of the string aligned along the field. I...

Awesome pulley problem! Hey, i just came across this pulley problem and thought it was easy to solve...on solving, my answers were not matching...! Check the attachment... There is a single string. Ignore the friction. The mass of the pulleys A, B & C is 1 Kg each. *ignore the dirty...

A massless string is placed over a massless pulley, and each end is wound around and fastened to a vertical hoop. The hoops have masses M1 and M2 and radii R1 and R2. The apparatus is placed in a uniform gravitation field g and released with each end of the string aligned along the field. I...

A massless string is placed over a massless pulley, and each end is wound around and fastened to a vertical hoop. The hoops have masses M1 and M2 and radii R1 and R2. The apparatus is placed in a uniform gravitation field g and released with each end of the string aligned along the field...

A pulley Problem Homework Statement So, in the diagram attached one mass is 1 kg, and the other one is 2 kg. and what would be reading on the scale Homework Equations F=ma The Attempt at a Solution I think this is very much like an elevator problem where the elevator is moving...

An old oaken bucket of mass 6.75 kg hangs in a well at the end of a rope. The rope passes over a frictionless pulley at the top of the well, and you pull horizontally on the end of the rope to raise the bucket slowly a distance of 4.00 m. How much work do you do on the bucket in pulling it up?