A small ball of mass 51 g is suspended from a string of length 89 cm and whirled in a circle lying in the horizontal plane.

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A small ball of mass 51 g is suspended from a string of length 89 cm and whirled in a circle lying in the horizontal plane. If the string makes an angle of 31degrees with the vertical, find the centripetal force experienced by the ball. The acceleration of gravity is 9.8 m/s^2. Answer in units of N

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