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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A fan is rotating with angular velocity 100 rev/s. Then is switched off. It takes 5 min to stop. (a) Find the total number of revolution made before the fan stops. (assume uniform angular retardation). (b) Find the value of angular retardation. ( c) Find the average angular velocity during this interval.

A fan is rotating with angular velocity 100 rev/s. Then is switched off. It takes 5 min to stop. (a) Find the total number of revolution made before the fan stops. (assume uniform angular retardation). (b) Find the value of angular retardation. ( c) Find the average angular velocity during this interval.

A particle moves in a circular path such that its speed 1v varies with distance s as v = sqrt(s) where prop is a positive constant. Find the acceleration of the particle after traversing a distance s.