A small ball with mass 1.30 kg is mounted on one end of a rod 0.780 m
Question:
A small ball with mass 1.30 kg is mounted on one end of a rod 0.780 m long and of negligible mass. The system rotates in a horizontal circle about the other end of the rod at 5010 rev/min.
(a) Calculate the rotational inertia of the system about the axis of rotation.
(b) There is an air drag of 2.30 x 10-2 N on the ball, directed opposite its motion. What torque must be applied to the system to keep it rotating at constant speed?
Step by Step Answer:
a With r 0780 m the rotational iner...View the full answer
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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