Sunday, June 23, 2013

Surfing For Physics Formulas For Power?

Lisa asks…Physics Question: angular velocity, work...merry go around...?A playground merry go around has a radius of 4.60 m and a moment of inertia of 240 kg * m^2 and turns with negligible friction about a vertical axle through its center.

A child applies a 25.0 N force tangentially to the edge of the merry go around for 20s. If the merry go around is initially at rest, what is its angular velocity after this 20s interval?

w = rad/s

How much work did the child do on the merry go

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