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Andreas93 [3]
2 years ago
13

A dentist holds a small mirror 1.9

Physics
1 answer:
nata0808 [166]2 years ago
8 0

Answer:

follow me for legitimate answer… oh? U don’t like the feeling of people stealing ur points huh?! Well theirs a taste of your own medicine

Explanation:

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A penny is placed on a rotating turntable. where on the turntable does the penny require the largest centripetal force to remain
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m = mass of the penny

r = distance of the penny from the center of the turntable or axis of rotation

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F = centripetal force experienced by the penny

centripetal force "F" experienced by the penny of "m" at distance "r" from axis of rotation is given as

F = m r w²

in the above equation , mass of penny "m"  and angular speed "w" of the turntable is same at all places. hence the centripetal force directly depends on the radius .

hence greater the distance from center , greater will be the centripetal force to remain in place.  

So at the edge of the turntable , the penny experiences largest centripetal force to remain in place.

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