Asked by Pawan

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?

11 years ago

Answered by Damon

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

11 years ago

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