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How much momentum will a dumb-bell of ma...

How much momentum will a dumb-bell of mass 10 kg transfer to the floor if it falls from a height of 80 cm ? Take its downward acceleration to be 10 m `s^(-2)`.

Text Solution

Verified by Experts

`v^(2) - u^(2) = 2as`
`v^(2) - 0^(2) = 2 xx 10 xx 0*8`
`v^(2) = 16 therefore v = 4 m//s`
`P = mv = 10 xx 4 = 40` m/s
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