The kinetic energy of a particle moving along a circle of radius R depends on the distance covered s as T = KS2 where K is a constant. Find the force acting on the particle as a function of S -

Options

A. `(2K)/5sqrt(1+(S/R)^(2))`
B. `(2KS)sqrt(1+(R/S)^(2))`
C. `(2KS)/5sqrt(1+(S/R)^(2))`
D. `(2S)/Ksqrt(1+(R/S)^(2))`

Answer

B