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Questions  

A body is allowed to slide from the top along a smooth inclined plane of length 5m at an angle of inclination 30º. If g = 10 ms-2, time taken by the body to reach the bottom of the plane is

a
b
1.414s
c
d
2s

detailed solution

Correct option is B

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A body of mass 5 X 10-3 kg is launched upon a rough inclined plane making an angle of 30° with the horizontal. Obtain the coefficient of friction between the body and the plane, if the time of ascent is half of the time of descent.    


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