AIPMT 2005 | Motion in a Plane Question 38 | Physics

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

$${\pi ^2}\,$$ m s^$$-$$2 and direction along the radius towards the centre

$${\pi ^2}\,$$ m s^$$-$$2 and direction along the radius away from the centre

$${\pi ^2}\,$$ m s^$$-$$2 and direction along the tangent to the circle

$${\pi ^2}\,$$/4 ms^$$-$$2 and direction along the radius towards the centre.

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