Physics, 29.11.2019 06:31, moningersavannah

Aplayground merry-go-round has radius 2.40 m and moment of inertia 2100 kg⋅m2 about a vertical axle through its center, and it turns with negligible friction.
(a) a child applies an 18.0 n force tangentially to the edge of the merry-go-round for 15.0 s. if the merry-go-round is initially at rest, what is its angular speed after this 15.0 s interval?
(b) how much work did the child do on the merry-go-round?
(c) what is the average power supplied by the child?

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