Question

A light object and heavy object are placed on two identical vehicles. The lighter object falls but the heavy one doesn't. But if mass is directly proportional to inertia the light object shouldn't have resisted much to its change in state of motion while the vice versa should have happened to the heavier object. Then why does it differ in the real world?

Answer 1

There is no violation is happened in this situation.

As you said it is correct that ,
Mass is directly proportional to inertia of its state.

That is when mass increase the inertia to continue that state increase,

In heavier mass the inertia to continue that state is more. That's why it never falls down and continue in the motion of vehicle.

But in case of lighter mass, it have less inertia to continue that state. And it falls easily.

There is no different in the application of science in the real world. 😊