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[" The upper half of an inclined plane w...

[" 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 botthalf "],[" if the coefficient of friction for the lower half "],[" is given by "],[[" (A) "2" tan "phi," (B) "tan phi],[" (C) "2sin phi," (D) "2cos phi]]

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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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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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