pulley

  1. R

    pulley question

    Hello, One object is sliding on a frictionless surface with mass of 3 kg. Another object is hanging over the surface with mass of 1.34 kg. The picture is just like the one posted under the title "pulley" a few threads down. I am told to find acceleration for both objects - but no force...
  2. R

    pulley

    Hi I need help here: The thread is inextensible and its mass is negligible. Based on the analysis of the figure, calculate the change in kinetic energy of the system for 2 seconds, assuming that the block 1 does not hit the pulley and the block 2 does not hit the ground. Explain the...
  3. J

    Pulley on a slope.

    I have the following question to answer. Can anyone please help. A box of mass 150kg rests on a slope that is inclined to the horizontal by 35 degrees. The box is restrained so that it cannot slide down the incline but is free to move up the incline. At the top of the incline a pulley is...
  4. C

    pulley question !!

    Two blocks are arranged as shown. The pulley can be considered to be massless, and friction is negligible. M1 is two times more massive than M2. If the system is released from rest, how far will M1 travel in 0.633 s? my work is Fx = Fx ma = F(tension) M1 a = M2 g M1 a = 1/2...
  5. M

    A pulley problem

    In the drawing, the weight of the block on the table is 422 N and that of the hanging block is 185 N. Ignoring all frictional effects and assuming the pulley to be massless, find (a) the acceleration of the two blocks and (b) the tension in the cord. I'm completely stumped on this one. I...
  6. I

    Blocks and Pulley

    Two objects are connected by a light wire with the wire pulling horizontally on the 400-N object. After this system has been released from rest, what is the tension in the wire? (g=10m/s^2) Basically, a 300N mass is hanging from a pulley which is attached to a 400N block on a horizontal table...
  7. D

    Block hanging from a pulley

    Two blocks are connected by a very light string passing over a massless and frictionless pulley. The 20.0N block moves 75.0 cm to the right and the 12.0N block moves 75.0 cm downward. To clarify, the 12 N block is hanging off the table around the pulley while the 20 N block rests on the...
  8. M

    tension in pulley

    Two blocks are connected by a cord on an Atwood machine (frictionless pulley of negligible mass). One block has mass m1 = 1.30 kg, other block has mass m2 = 2.80 kg. I found the magnitude of the blocks' acceleration like this: a = \frac{F_{net}}{m_2 + m_1} F_{net} = (2.8 - 1.3 kg) (9.8 m/s^2)...
  9. ManyArrows

    pulley prob

    I have tried these probs and can't get the final answer. How do I solve them. I have included the probs and work so far. [/ATTACH]
  10. J

    Masses suspended by a pulley

    Two masses are suspended on either side of a pulley.M1=500 g and M2=750 g. What is the magnitude and direction of their acceleration? What is the tension in the rope?
  11. L

    Series of Mass and Pulley Tension questions.

    In the figure, M2 has more mass than M1 and M1 has more mass than M3. The questions refer to the magnitudes of tensions and weights. There is friction between the horizontal plane and M2 (μk ≠ 0). M2 is observed to travel at a constant speed. Assume that the pulleys are frictionless and...
  12. O

    tension over a pulley

    A 2,00kg textbook is resting on a frictionless, horizontal surface. A cord is attached to the book passes over a pulley whose diameter is 0.150m, to a hanging book with mass 3,00kg. The system is at rest and the books are observed to move 1,20m in 0,8s. when released a) What is the tension in...
  13. O

    tension over a pulley

    A 2,00kg textbook is resting on a frictionless, horizontal surface. A cord is attached to the book passes over a pulley whose diameter is 0.150m, to a hanging book with mass 3,00kg. The system is at rest and the books are observed to move 1,20m in 0,8s. when released a) What is the tension in...
  14. L

    Tension's relation to a pulley's net force

    When a stretched rope runs over a pulley used to change rope's direction, e.g. over a pulley hanging by the ceiling, the tension in the rope hardly ever contributes to the net force acting on the pulley. True or False?
  15. L

    Masses on a pulley, string tension prob!

    The pulley system shown in the figure moves in Earth's gravity. The masses are m1 = 0.320 kg and m2 = 0.680 kg. The pulley is massless and frictionless. What is the tension in the string? --O--- <-- Pulley -|--|-- <-- String #---|- m1--# -----m2 Here's what I tried. T= g(m2) - g(m1) T =...
  16. B

    No friction pulley system

    Mass ma rests on a smooth horizontal surface, mb hangs vertically off the edge (like a pulley system) a)If ma=10.0 kg and mb=7.0 kg in the figure (Part A figure) , determine the magnitude of the acceleration of each block b)If initially ma is at rest 1.100 m from the edge of the table, how...
  17. D

    pulley problem

    in order to raise a mass of 100kg a man of mass 60kg fastens a rope to it and passes the rope over a smooth pulley he climbs the rope with an acceleration of 5g/4 RELATIVE TO ROPE tension in rope???????? with method plz
  18. A

    Pulley question

    Hey guys. Look at this pulley system, I wrote down all the equations. The pulley on the left is massless, the one on the right has the mass of m3 and radius R. I also wrote the the torque equation of the pulley and the thing I don't understand is the what is the acceleration of the pulley (a3)...
  19. A

    Simple pulley system

    Hey guys. I have the following pulley system (in the pic). I wrote down all the equations. The thing I don't get is the accelerations equation (a1 = 2*a2). I understand that I can get to this equation somehow by the length of the rope, but how? Thanks.
  20. A

    Pulley system

    Hey guys. look at this pulley system. I drew all the forces, and also, the pulleys have no mass and so as the rope. What do you say about the equations I wrote, are they right? And BTW the first part of the question is to figure which mass has acceleration bigger then g and they say you can...