A small mass m on a string is rotating without friction in acircle. The string is shortened by pulling it through the axisof rotation without any external torque, Fig. 8–39. Whathappens to the tangential velocity of the object?(a) It increases.(b) It decreases.(c) It remains the same.

A small mass m on a string is rotating without friction in acircle. The string is shortened by pulling it through the axisof rotation without any external torque, Fig. 8–39. Whathappens to the tangential velocity of the object?(a) It increases.(b) It decreases.(c) It remains the same.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter11: Angular Momentum

Section: Chapter Questions

Problem 11.3CYU: Check Your Understanding Which has greater angular momentum: a solid sphere of mass m rotating at a...

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Question

A small mass m on a string is rotating without friction in a
circle. The string is shortened by pulling it through the axis
of rotation without any external torque, Fig. 8–39. What
happens to the tangential velocity of the object?
(a) It increases.
(b) It decreases.
(c) It remains the same.

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