A uniform disk of radius 0.12 m and mass 5 kg is pivoted such that it rotates
Question:
A uniform disk of radius 0.12 m and mass 5 kg is pivoted such that it rotates freely about its central axis (Figure). A string wrapped around the disk is pulled with a force of 20 N.
(a) What is the torque exerted on the disk?
(b) What is the angular acceleration of the disk?
(c) If the disk starts from rest, what is its angular velocity after 5 s?
(d) What is its kinetic energy after 5 s?
(e) What is the total angle θ that the disk turns through in 5 s?
(f) Show that the work done by the torque τΔθ equals the kinetic energy.
5 kg R 20 N
Step by Step Answer:
a FR 20 012 Nm 24 Nm b I I 12 MR 2 2 MR 2 667 r...View the full answer
Fundamentals of Ethics for Scientists and Engineers
ISBN: 978-0195134889
1st Edition
Authors: Edmund G. Seebauer, Robert L. Barry
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