wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A child stands at the centre of a turntable with his two arms outstretched. The turntable is set rotating with an angular speed of 40 rpm. How much is the angular speed of the child if he folds his hands back and thereby reduces his moment if inertia to 2/5 times the initial value? Assume that the turntable rotates without friction.


A

16 rpm

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

100 rpm

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C

40 rpm

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

Given data is not sufficient

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Join BYJU'S Learning Program
CrossIcon