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 seconds, what is the magnitude and direction of acceleration of the stone?

Explanation

`=(88)/(25)" rad "s^(-1),=(2pi)/(T)=(2piN)/(t)`
`a=991.2cms^(-2)`