Physics

Problem

A stone tied to the end of a string of 1m long is whirled in a horizontal circle with a constant speed. If the stone makes 22 revolution in 44 seconds, what is the magnitude and direction of acceleration of the stone :- (1)

\pi^2 \text{ms}^{-2}

and direction along the tangent to the circle. (2)

\pi^2 \text{ms}^{-2}

and direction along the radius towards the centre. (3)

\frac{\pi^2}{4} \text{ms}^{-2}

and direction along the radius towards the centre. (4)

\pi^2 \text{ms}^{-2}

and direction along the radius away from the centre.

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