ok here is my question....
a stroboscope is a light that flashes on and off at constant rate. it can be used to illuminate rotating object. if the flashing rate is adjusted right the object ccan appear stationary.
1. waht is shortest time between flashes of light that will makes a 3 bladed propeller appear stationary when it is rotating with angular speed. of 13.8 rev/ s
2. what is next shortest time....?
please explain i read the chapter over and over and over again and i cant find anything to relate tot his problem... maybe im completely missing something but i am extremely lost. please explain in detail as i am desperate to grasp physics...(it is so hard to me) please helpme and explain i really need to understand where answers come from and how to set up problems thank you
2007-03-03
12:40:36
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3 answers
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asked by
Anonymous
in
Science & Mathematics
➔ Physics