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A block of mass 10 kg is placed on a horizontal ground surface as shown in the figure and a force F = 100N is applied on the block as shown in the figure. The block is at rest with respect to ground. If the contact force between block and ground is 25 n (in Newton) then value of n is :( Take g = 10 m/s2)

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a

1

b

2

c

3

d

4

answer is D.

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Detailed Solution

F = 100 NRound m = 10 kg, θ=30∘N=100cos⁡30∘=50f=503R=502+3×502=4×502=2×50=25nn=4

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A block of mass 10 kg is placed on a horizontal ground surface as shown in the figure and a force F = 100N is applied on the block as shown in the figure. The block is at rest with respect to ground. If the contact force between block and ground is 25 n (in Newton) then value of n is :( Take g = 10 m/s2)