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General Physics

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 Joined: 4 Apr 2012 Post: 7
4 Apr 2012 11:54:14 IST
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A particle of mass 2 kg is thrown in vertically upward directionwith momentum p. The total work done by gravitational force is400 J when it stops momentarily at the top of its trajectory. Findp. Neglect air resistance.

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4 Apr 2012 13:13:45 IST
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40

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4 Apr 2012 13:45:45 IST
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Work done due to gravitational force is -mgh=400j. We can find 'h' from dis equation. From v^2-u^2=2as. V=0 , a=-g=10m/s^2 , s=h. We can find 'u' . P=mu=40.

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4 Apr 2012 16:11:38 IST
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40 Nsec

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