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Q.

Starting from rest, a body slides down at 45° inclined plane in twice the time it takes to slide down the same distance in the absence of friction. The coefficient of friction between the body and the inclined plane is

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a

0.75

b

0.25

c

0.80

d

0.33

answer is C.

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Detailed Solution

μ=tanθ11n2μ=1×114=0.75

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