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[" 8.A "50" kg girl is swinging on a swi...

[" 8.A "50" kg girl is swinging on a swing from rest.Then,"],[" the power delivered when moving from rest.Then,"],[2ms^(-1)" upwards in a direction making an angle "60^(@)],[" with the verticle is "],[[" a) "980W," (b) "490W" (c) "490sqrt(3)W" (d) "245W],[" A bead can slide on a smooth circular."]]

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