A stroboscope is a light that flashes on and off at a fix, Physics

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A stroboscope is a light that flashes on and off at a fix

A stroboscope is a light that flashes on and off at a fix rate. It can be used to illuminate a rotating object, and if the flashing rate is adjusted properly, the object can be made to appear stationary.

(a) Find the shortest time between flashes of light that will make a three-bladed propeller appear stationary when it is rotating with an angular speed of12.6 rev/s?

s

(b) Determine what is the next shortest time?

s

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Physics: A stroboscope is a light that flashes on and off at a fix

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