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The upper half of an inclined plane with...

The upper half of an inclined plane with inclination `phi` is perfectly smooth while the lower half is rough A body starting from rest at the will again come to rest to the bottom if the coefficient of friction for the lower half is given by

A

`mu = sintheta`

B

`mu = cottheta`

C

`mu = 2costheta`

D

`mu = 2tantheta`

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The correct Answer is:
D
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The upper half of an inclined plane with inclination phi is perfectly smooth while the lower half is rough. A body starting from rest at the top will again come to rest at the bottom if the coefficient of friction for the lower half is given by

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AAKASH INSTITUTE ENGLISH-MOCK TEST 7-Exercise
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  7. Volume versus temperature (V-T) graph of an ideal gas of equal number ...

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  9. If speeds of the four molecules of an ideal gas are v, 3v, 5v and 7v r...

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