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Question

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 revolution in 44 seconds, what would be the magnitude and direction of acceleration of the stone?
  1. π2ms2 and direction along the tangent to the circle
  2. π2ms2 and direction along the radius towards the centre.
  3. π24ms2 and direction along the radius towards the centre.
  4. π2ms2 and direction along the radius away from the centre.

A
π24ms2 and direction along the radius towards the centre.
B
π2ms2 and direction along the radius away from the centre.
C
π2ms2 and direction along the tangent to the circle
D
π2ms2 and direction along the radius towards the centre.
Solution
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