Question

A rotating wheel has a speed of 1200 r.p.m.
and then it is made to slow down at a constant
rate at 4 rad/sec". The number of revolution
it makes before coming to rest will be :-​

Answer 1

Answer:

1200 r.p.m = 1200/60 = 20 rad/sec

so, no of revolution = 20/4= 5