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A body of mass 3kg hits a wall at an ang...

A body of mass `3kg` hits a wall at an angle of `60^(@)` and with speed of `10 m//s` and returns at the same angle and with the same velocity. The impact time is `0.2 sec`. Calculate force exterted on the wall

A

`150sqrt(3) N`

B

`100 N`

C

`50sqrt(3)N`

D

`75sqrt(3) N`

Text Solution

Verified by Experts

The correct Answer is:
A
`|vec(F)_(wall)|=(|Deltavec(P)|)/(Deltat)`
`:. F_(wall)=(2 mv cos 30^(@))/0.2=(2xx3xx10)/0.2 xx(sqrt(3))/2=150 sqrt(3)N`
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