A block with mass m is revolving with linear speed v 1 in a circle of radius
Question:
A block with mass m is revolving with linear speed v1in a circle of radius r1on a frictionless horizontal surface (see Fig. E10.42). The string is slowly pulled from below until the radius of the circle in which the block is revolving is reduced to r2.D
(a) Calculate the tension T in the string as a function of r, the distance of the block from the hole. Your answer will be in terms of the initial velocity v1 and the radius r1.
(b) Use
to calculate the work done by T when r changes from r1 to r2.
(c) Compare the results of part (b) to the change in the kinetic energy of the block.
Figure E10.42:
W = SR T(r) · dr
Step by Step Answer:
Identify The answer to part a can be taken from the solution to Problem 1096 The workenergy theore...View the full answer
University Physics with Modern Physics
ISBN: 978-0321696861
13th edition
Authors: Hugh D. Young, Roger A. Freedman, A. Lewis Ford
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