Question

There is a steel block and plastic block both of the same size. If both blocks are at rest, it means that

• A. steel ball has more inertia than plastic ball
• B. plastic ball has more inertia than steel ball
• C. Both have the same inertia
• D. None of the above

Answer 1

The correct option is A

steel ball has more inertia than plastic ball

Inertia is the tendency of a body to oppose any change in its state of rest or of uniform motion.

The magnitude of inertia of a body is determined by its mass. For example, a larger mass such as that of a train indicates a larger inertia. A steel block has a higher mass than a plastic block, hence a steel block has a higher inertia.