Question

Determine the angular acceleration
of rotating body which slows down
from 500 r.p.m to rest in
10 second.
​

Answer 1

use third law of equation ( in rotational motion)

Answer 2

Change in angular velocity = 0- 500 = -500rpm = -500×2π/60 = -50π/3 rad/s

Time = 10 secs

Angular acceleration = -5π/3 rad/s^2