Question

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

Answer 1

`Mass = 50kg`

Step-by-step explanation:

Required

Which has the larger inertia

Inertia (I) is calculated as follows:

`I = mr^2`

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:

`I = 10 * 4^2`

`I = 160`

Assume r is constant and m is increased to 25

The inertia becomes:

`I = 25 * 4^2`

`I = 25 * 16`

`I = 400`

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

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