A ball of mass 1kg is attached to an ine...

A ball of mass `1kg` is attached to an inextensible string. The ball is released from the position shown in figure. Find the impulse imparted by the string to the ball immediately after the string becomes taut. (Take `g=10m//s^2`)

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The correct Answer is:

A, B

`h=(1+1)m=2m`
`:. v=sqrt(2gh)`
`=sqrt(2xx10xx2)`
`=6.32m//s` (downwards)
`Impu lse=Deltap=m(v_f-v_i)`
`=(1)[0-(-6.32)]=6.32N-s` (upwards)

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