The force in newton, necessary to roll the wheel along the rail is

Question

A steel wheel of 600 mm diameter on a horizontal steel rail. It carries a load of 500 N. The coefficient of rolling resistance is 0.3. The force in newton, necessary to roll  the wheel along the rail is          

                      

      (a) 0.5                             (b) 5                             (c) 1.5                             (d) 150

Answer 1

Given a steel wheel on a horizontal rail carrying a load