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Question

Find the force exerted by 3 kg body on 1 kg assuming all surfaces are smooth (g=10 m/s2)

A
30 N
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B
20 N
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C
8 N
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D
2 N
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Solution

The correct option is A 30 N
Since the surfaces do not have friction, there is no force acting on 3 kg body in horizontal direction.
Hence,

N=3g=3×10=30 N

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