Which ball has larger Inertia before touching the ground when it falls freely from a certain height (air friction is zero)
a. mass 50 kg b. mass 25 kg
c. mass 10 kg d. All of these

Explanation:

Required

Which has the larger inertia

Inertia (I) is calculated as follows:

Where m represents the mass of the object and r represents the distance from the axis.

Take for instance m = 10 and r = 4

The inertia would be:

Assume r is constant and m is increased to 25

The inertia becomes:

Notice that there is an increment in inertia, when the mass increased.

Hence, mass of 50kg will have the larger inertia.

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