A particle of mass m is observed from an inertial frame of reference and is found to move in a circle of radius r with a uniform speed v. The centrifugal force on it is
(a) $\frac{m v^{2}}{r}$ towards the centre
(b) $\frac{m v^{2}}{r}$ away from the centre
(c) $\frac{m v^{2}}{r}$ along the tangent through the particle
(d) zero

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Solution

(d) zero

The centrifugal force is a pseudo force and can only be observed from the frame of reference, which is non-inertial w.r.t. the particle.

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A particle of mass m is observed from an inertial frame of reference and is found to move in a circle of radius r with a uniform speed v. The centrifugal force on it is (a) mv2r towards the centre (b) mv2r away from the centre (c) mv2r along the tangent through the particle (d) zero

(d) zero The centrifugal force is a pseudo force and can only be observed from the frame of reference, which is non-inertial w.r.t. the particle.

(d) zero

The centrifugal force is a pseudo force and can only be observed from the frame of reference, which is non-inertial w.r.t. the particle.