MHT CET20225 Aug 2022Morning ShiftPhysicsRotational MotionActual

The relative angular speed of hour hand and second hand of a clock is (in rad/s)

Options

A311 578
B421 11600
C719 21600
D919 15600

Correct answer

C. 719 21600

Step-by-step solution

The correct option is (C). Concept: The angular speed is given by = t Relative angular speed is given by, = _ s - _ h The angular speed of the second dial is _ s = 2 60 = 30 rad / s The angular speed of the hour dial is _ h = 2 3600 12 = 21600 rad / s Therefore, relative angular speed is given by, = _ s - _ h = 30 - 21600 = 719 21600 rad / s

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