Motion in a Plane Multiple Questions and Answers.




21.A stone tied to the end of string 80cm long is whirled in horizontal circle with a constant speed. If the stone makes 14 revolutions in 25 sec, what is the magnitude of acceleration of the stone?
A. 680 cm/s2
B. 860 cm/s2
C. 720 cm/s2
D. 990 cm/s2

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