The kinetic energy \( K \) of a particle moving along a circle of radius \( R \) depends upon th...
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0The kinetic energy \( K \) of a particle moving along a circle of radius \( R \) depends upon the distance \( s \) as \( K=a s^{2} \). The force acting on the particle is
(1) \( 2 a \frac{s^{2}}{R} \)
(2) \( 2 a s\left[1+\frac{s^{2}}{R^{2}}\right]^{1 / 2} \)
(3) 2 as
(4) \( 2 a \)
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