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Question

The question is from force and pressure.

In a game of cricket, the 'bails' fall when the ball strikes them. This is an example of a/an ________ force.

Pls. explain

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Solution

Inertial force

An inertial force is a force that resists a change in velocity of an object. It is equal to—and in the opposite direction of—an applied force, as well as a resistive force.

The concept is based on Newton's Laws of Motion, including the Law of Inertia and the Action-Reaction Law.

Inertial force can be examined both when you apply a force on an object and when a force is applied on you.

When you apply force

When you apply a force on a freely moving object in order to accelerate, decelerate, or change its direction, an equal inertial force acts on the object in an opposite direction of your applied force.

You can experience or feel that inertial force. If there were no inertial force, the object would just move when you pushed on it.

For example, when you push on an object, you can feel its resistance to the change in speed or direction.

When force applied on you

When an applied force acts on you, you can feel the inertial force opposing the applied force. However, it is not as obvious as when a force is applied on you.

Examples include:

When you are given a shove, you feel your resistance to being moved.

When the applied force of gravity pulls you toward the ground, you can feel the opposing inertial force from your weight on the ground.

Likewise, when you are riding on a fast moving merry-go-round, you can feel the outward pull of the inertial centrifugal force on you.


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