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OpenStudy (anonymous):
What is the centripetal acceleration of a ball on a string that is whirled horizontally over a boy’s head? The radius of the circle is 1.8 meters, and the ball is traveling at 9.2 meters/second. A.19 meters/second2 B.84 meters/second2 C.110 meters/second2 D.31 meters/second2 E.47 meters/second2
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OpenStudy (shamim):
acceleration a=v^2/r
OpenStudy (shamim):
here v=9.2m/s r=1.8m
OpenStudy (anonymous):
Answer is 47.022222
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