question_answer

A motorcyclist of mass m is to negotiate a curve of radius r with a speed v. The minimum value of the coefficient of friction so that this negotiation may take place safely, is                              [Haryana CEE 1996]            

A)                         \[{{v}^{2}}rg\]                    

B)                         \[\frac{{{v}^{2}}}{gr}\]            

C)                         \[\frac{gr}{{{v}^{2}}}\]                 

D)                         \[\frac{g}{{{v}^{2}}r}\]