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Q.

A 10kg mass is resting on a horizontal surface and horizontal force of 80N is applied. If μ = 0.2, the ratio of acceleration without and with friction is (g = 10ms–2)

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a

2

b

3/4

c

1/2

d

4/3

answer is B.

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Detailed Solution

Fnet=ma,a1=Fm,a2=Fμkmgm

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A 10kg mass is resting on a horizontal surface and horizontal force of 80N is applied. If μ = 0.2, the ratio of acceleration without and with friction is (g = 10ms–2)