Motorcycle Wheel Rotational Energy Ratio · PhysicsBowl 2021 #35
Physics · mechanics
Problem
A motorcycle has a total mass of 150 kg. Each wheel has a mass of 10 kg and a radius of 30 cm. As the motorcycle is moving, what is the ratio of the rotational kinetic energy of the wheels to the total translational kinetic energy of the motorcycle? Assume the wheels are uniform disks and roll without slipping.
A) 0.033:1 B) 0.067:1 C) 0.33:1 D) 0.67:1 E) 3.3:1