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Q.

A body slides over an inclined plane forming an angle of 45o with the horizontal. The distance x travelled by the body in time t is described by the equation x = kt2, where k = 1.732. The coefficient of friction between the body and the plane has a value

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a

μ=0.5

b

μ=1

c

μ=0.25

d

μ=0.75

answer is A.

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Detailed Solution

Differentiating the equation x = kt2, we getthe value of  a=gsin⁡θ−μkcos⁡θ
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