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A child sitting 1.50m from the center of a merry-go-around moves with a speed of 1.10m/s .

Part a) Calculate the centripetal acceleration of the child.

Part b) Calculate the net horizontal force exerted on the child ( = 20.5 ).

  • physics - ,

    m=20.5 kg ???

    a=v²/R = (1.1)²/1.5 = 0.807 m/s²,
    F=m•a = 20.5•0.807=16.5 N

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