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Question

Physics Question on Uniform Circular Motion

A stone tied to 180cm180 \,cm long string at its end is making 2828 revolutions in horizontal circle in every minute The magnitude of acceleration of stone is 1936xms2\frac{1936}{x} m s^{-2} The value of xx _____ ( Take π=227\pi=\frac{22}{7} )

Answer

The correct answer is 125
a=ω2R=(6028×2π​)2×1.8
=(6056​×722​)2×1.8

=225(44)2​×1.8
=2251936×1.8​
=1936125=\frac{1936}{125}
x=125