Homework Help: physics

Posted by John on Tuesday, May 1, 2012 at 11:43am.

a person 0f mass m = 60 kg walks along the radius from the periphery to the center of a circular platform of moment of inertia= 200kgm square and radius r = 3m. the disk is a rotating frictionless with angular velocity= 0.3 rad\s.find the angular velocity of the system when the person is 50 cm from the center. find the change of mechanical energy during the displacement. assuming that the walk takes 2.50s, find the average torque exerted by the person on the platform.

No one has answered this question yet.

Answer this Question

Related Questions

Physics - A child of mass 40 kg stands beside a circular platform of mass 115 kg...
physics - A child of mass 40 kg stands beside a circular platform of mass 90 kg ...
Physics - A child of mass 40 kg stands beside a circular platform of mass 100 kg...
physics - A playground merry-go-round has a disk-shaped platform that rotates ...
physics - A playground merry-go-round has a disk-shaped platform that rotates ...
Physics - A playground merry-go-round has a disk-shaped platform that rotates ...
Physics - a 32 kg child stands at the edge of a circular platform that rotates ...
Physics - A person of mass 55 kg stands at the center of a rotating merry-go-...
physics - You are standing on a merry-go-round of mass 500 kg and radius 2 m. ...
physics - A lazy Susan consists of a heavy plastic disk mounted on a ...

For Further Reading

First Name:
School Subject:
Answer: