Question
Physics Question on Rotational Motion
A solid cylinder of mass 50 kg and radius 0.5 m is free to rotate about the horizontal axis. A massless string is wound round the cylinder with one end attached to it and other hanging freely. Tension in the string required to produce an angular acceleration of 2 revolutions s-2 is:
A
50N
B
78.5N
C
157N
D
25N
Answer
157N
Explanation
Solution
The correct option (C): 157N