Sat January 28, 2012 By:

a stone tied to a string 80 cm long is whirled in horizontal circle with constant speed.if stone makes 14 revs in 25 sec,what is the magnitude and direction of acceleration?

Expert Reply
Mon January 30, 2012
Frequency of the revolution=14/25,
radius of the circle= 80 cm.
acceleration=r w2
w=2 *pi* f
put the values and get the answer, if you dont get you can ask again.
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