1. We retum to the Atwood machine from last term - a machine consisting of a pulley, a string, and a system of masses. We will continue to assume a massless string, but we will relax the assumption that the pulley is massless and frictionless (see section 7.4 of the text). Consider a cylindrical pulley of radius R and mass M. Two masses m, < m2 are attached by a massless string. As the pulley turns, friction in the axle exerts a torque of magnitude t. If the blocks are released from rest, how long will it take for m2 to hit the floor? R m2 d m1 a. Establish a coordinate system and draw a free body diagram for the two blocks, list the knowns and unknowns. (See sections 1.7 and 5.7 of the text on how to draw a correct free body diagram.) b. Assume the pulley is a rigid body. Draw an extended free body diagram for the pulley. An extended diagram, often called a torque diagram, shows the point of application of the forces. On

1. We retum to the Atwood machine from last term - a machine consisting of a pulley, a string, and a system of masses. We will continue to assume a massless string, but we will relax the assumption that the pulley is massless and frictionless (see section 7.4 of the text). Consider a cylindrical pulley of radius R and mass M. Two masses m, < m2 are attached by a massless string. As the pulley turns, friction in the axle exerts a torque of magnitude t. If the blocks are released from rest, how long will it take for m2 to hit the floor? R m2 d m1 a. Establish a coordinate system and draw a free body diagram for the two blocks, list the knowns and unknowns. (See sections 1.7 and 5.7 of the text on how to draw a correct free body diagram.) b. Assume the pulley is a rigid body. Draw an extended free body diagram for the pulley. An extended diagram, often called a torque diagram, shows the point of application of the forces. On

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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