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ln the figure shown 'P' is a plate on which a wedge B is placed and on B a block A of mass m is placed. The plate is suddenly removed and system of B and A is allowed to fall under gravity. Neglecting any force due to air on A and B, the normal force on A due to B is

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An Intiative by Sri Chaitanya

a

mgcos θ

b

mg cos θ

c

zero

d

2mgcos θ

answer is .

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Detailed Solution

F.B.D. of block AApplying Newton's second law for block A in vertical directionmAg-N cos θ = 0where θ is the angle of the wedge⇒N cos θ = 0as θ < 900 ∴ N= 0

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