PHYICS
posted by Pawan on .
a turn table is turing at a rate of 45 rad/sec and comes to rest after 5 second.how many rotation does it make before coming to rest?

average angular velocity during stop = 45/2 = 22.5 rad/sec
so
total angle = 22.5 rad/s * 5 s = 112.5 radians
112.5 radians / 2 pi radians/revolution
= 17.9 revolutions