Answer:
Explanation:
We have to consider how the location of the mass affects the moment of inertia.
For a solid cylinder, I = mR²
For a hollow cylinder, I = 1/2mR²
Where
I ist the moment of inertia,
m is their masses,
R is the radius of rotation.
Since they have the same mass and radius, it can be seen that a hollow cylinder has twice the moment of inertia as a solid cylinder of the same mass and radius.
We know that the rotational kinetic energy is proportional to the moment of inertia. From;
Rotational KE = 1/2IW²
Where W is the angular speed.
so that at the same angular speed, the wheel with the spokes will have about double the kinetic energy as the solid cylinder. Take note that some of the mass is in the spokes so the moment of inertia is not exactly double.