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A block is pushed up a rough inclined pl...

A block is pushed up a rough inclined plane of 45°. If the time of descent is twice the time of ascent, the coefficient of friction is

A

0.6

B

0.4

C

0.8

D

0.25

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The correct Answer is:
C
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AAKASH SERIES-LAWS OF MOTION-PRACTICE EXERCISE
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  2. A block sliding down a rough 45° inclined plane has half the velocity ...

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  3. A block is pushed up a rough inclined plane of 45°. If the time of des...

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  4. An object takes 1 second to slide down a rough 45^(@) inclined plane. ...

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  5. A body slides down a smooth plane starting from rest in 4sec. Time tak...

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  6. A block is lying on an inclined plane which makes an angle of 60^@ wit...

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  7. A 10sqrt3 kg box has to move up an inclined slope of 60^(@) to the hor...

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  8. The minimum force required to move a body up an inclined plane is thre...

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  9. A body of mass 10kg is on a rough inclined plane having an inclination...

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  10. A block of wood mass 5kg is placed on a plane making an angle 30^(@) w...

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  11. A body of mass 'm' slides down a smooth inclined plane having an incli...

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