A stone tied to the end of string 1m long is whirled in a horizontal circle with a constant speed. If the stone makes 22 revolution in 44s, What is the magnitude and direction of acceleration of the ston is ?

Options

A. `(pi^(2))/(4)ms^(-2)` and direction along the radius towards the centre
B. `pi^(2) ms^(-2)` and direction along the radius away from the
centre
C. `pi^(2) ms^(-2)` and direction along the radius towards the centre
D. `pi^(2) ms^(-2)` and direction along the tangent to the circle

Answer

C