Physics, 13.02.2020 20:22 germainenez3288
A uniform disk of mass M = 4.9 kg has a radius of 0.12 m and is pivoted so that it rotates freely about its axis. A string wrapped around the disk is pulled with a force F equal to 20 N.
(a) What is the torque being exerted by this force about the rotation axis?
(b) What is the angular acceleration of the disk?
(c) If the disk starts from rest, what is its angular speed after 4.6 s?
(d) What is its kinetic energy after the 4.6 s?
(e) What is the angular displacement of the disk during the 4.6 s?
Answers: 3
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