A Playground Merry-Go-Round Has a Radius R and a Rotational

question 19

Multiple Choice

A playground merry-go-round has a radius R and a rotational inertia I.When the merry-go-round is at rest, a child with mass m runs with speed v along a line tangent to the rim and jumps on.The angular velocity of the merry-go-round is then:

• A)mv/I
• B)v/R
• C)mRv/I
• D)2mRv/I
• E)mRv/(mR² + I)

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