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Q.

A body of mass 3 kg hits a wall at an angle of 60° and returns at the same angle. The impact time was 0.2 s. Calculate the force exerted on the wall :

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a

1503N

b

503N

c

100 N

d

753N

answer is A.

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Detailed Solution

F=ΔpΔt=2mvcos⁡30∘Δt=2×3×10×3/20.2=1503N
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