A stone of mass 100 g 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, calculate the centripetal force acting on the stone.

A stone of mass 100 g tied to the end of a string 80 cm long is whirle

1.	A stone of mass 100 g 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, calculate the centripetal force acting on the stone.
Answer» SOLUTION :`F = m xx (2pin)^(2)R = 0.1 xx 4PI^(2) xx (14//25)^(2) xx 0.8 = 0.989 N`