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in Physics by (8.8k points)

A stone tied to the end of a string 80 cm long is whirled in a horizontal circle with a constant speed. If the stone makes 14 revolutions in 25 s, what is the magnitude and direction of acceleration of the stone?

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Length of the string, l = 80 cm = 0.8 m

Number of revolutions = 14 

Time taken = 25 s

The direction of centripetal acceleration is always directed along the string, toward the centre, at all points.

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