Answer: Hoop
Explanation:
The general formula for rotational inertia (I) is given as:
I = mr², where:
- m is the mass
- r is the radius, or the distance of the concentration of mass from the center
Since there is less concentration of mass from the center for the hoop, the r value is going to be bigger.
There is more mass located near the center of the solid disk, so it will have a smaller r value and therefore less rotational inertia.
Therefore, the hoop has a larger rotational inertia.
