A particle of mass 'm' is moving along a circle of radius 'r'. At some instant, its speed is 'v' and it is gaining speed at a uniform rate'a', then, at the given instant, acceleration of the mparticle is :

Options

A. along the radius
B. inclined to radius at `theta="sin"^(-1)(1)/([1+(v^(4))/(a^(2)r^(2))]^(1//2))`
C. inclined to radius at `theta=cos^(-1)(ar)/(v^(2))`
D. inclined to radius at `theta=tan^(-1)(v^(2))/(ar)`

Answer

B