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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 three times 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 veloci...

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  3. A block is pushed up a rough inclined plane of 45^(@). If the time of ...

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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^(@) w...

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  7. A 10sqrt(3) kg box has to move up an inclined slope of 60^(@) to the h...

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

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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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  12. A body is sliding down an inclined plane have coefficient of friction ...

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