A torque of 20.0 N.m is applied to a bolt.The bolt rotates through an angle of 180 degrees.The work done in turning the bolt is
A) 72.5 J.
B) 51.9 J.
C) 62.8 J.
D) 49.9 J.
E) 58.4 J.

Question

Quizplus · Accepted Answer

The work done in turning the bolt can be calculated using the formula:
W = τθ
where τ is the torque applied and θ is the angle rotated.
Plugging in the given values:
W = (20.0 Nm)(180°)
W = (20.0 Nm)(π radians/180°)    (converting degrees to radians)
W = 62.8 J
Therefore, the answer is (C) 62.8 J.

A Torque of 20