A cart has four wheels in the shape of uniform cylinders, each of whose mass is m= 20 kg. The total mass of the cart, including the cylinders, is M= 1000 kg.
The total KE (kinetic energy) of the cylinders is what percentage of the total KE of the moving cart?
Recall #1: The KE due to rotation, of an object whose moment of inertia is I, which is rotating with angular velocity w, is:
(1) KErot = .5 I w^2
Recall #2. The moment of inertia of a uniform cylinder of mass m and radius R is expressed by:
(2) I= .5 m R^2
Recall #3. From equations of linear motion and of angular ...
The expert adds rotational kinetic energy plus translational kinetic energy. The percentage of the total KE of the moving cart is given.