The frictional torque transmitted in a flat pivot bearing, assuming uniform wear, is

(a) \(\mu W R\)

(b) \(\frac{3}{4} \mu W R\)

(c) \(\frac{2}{3} \mu W R\)

(d) \(\frac{1}{2} \mu W R\).

(where \(\mu=\) Coefficient of friction

\(W=\) Load over the bearing

\(R=\) Radius of bearing)