Posted by Anonymous on Sunday, September 30, 2012 at 6:55pm.
A 44.8 child is standing on the outer edge of a merrygoround that has moment of inertia 981 and radius 2.40 . The entire system is initially rotating at 0.180 . Find the angular velocity if the child moves to a final position 1.10 from the center of the merrygoround.

physics  bobpursley, Sunday, September 30, 2012 at 7:28pm
It can't be answered very well without units given.
conservation of momentum
Ii*wi=(If)*Wf
where If=Ii+masskid*r^2
initiall, the moment of inertia for the child is zero, because r=0
watch units on angular rotation initial...
Answer This Question
Related Questions
 Physics  A 24.5kg child is standing on the outer edge of a merrygoround ...
 Physics  A 24.5kg child is standing on the outer edge of a merrygoround ...
 Physics  A merrygoround is rotating at 4.775 revs/min with a 45 kg child on ...
 physics  A playground merrygoround of radius 2.00 m has a moment of inertia I...
 Physics  A turntable of radius 2m rotates freely about a fixed vertical axis. A...
 Physics Inertia : Merrygoround  A playground merrygoround of radius 1.96 m ...
 Physics  A child of mass m is playing on a merrygoround which has mass 6m and...
 College Physics  A 40 kg child is standing on the edge of a merrygoround in a...
 Physics  A playground merry–go–round has a mass of 118 kg and a radius of 1.80 ...
 physics  A 1.80 m radius playground merrygoround has a mass of 120 kg and is ...
More Related Questions