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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

A ceiling fan rotates about its own axis with some angular velocity. When the fan is switched OFF, the angular velocity becomes th of the original in time t and n revolutions are made in that time. The number of revolutions made by the fan during the time interval between switch OFF and rest are (Angular retardation is uniform) [MHTCET 2017]

Answer: (C)

Solution

From to : ; total angle to rest , i.e. times the angle

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Question ID VK-040794