Question

The wheel of a motor cycle of radius 35cm how many revolutions per minute must the wheel make so as to keep a speed of 66km/hr

Answer 1

Circumference of the wheel=2׶×radius
=220cm
Speed of the motor cycle=66km/hr
=66×1000÷60 m/min
=1100m/min
Req. No. Of revolution =1100/220
=5