Question

A ball located at the bottom of a spherical deepening is in a state of _ _ _ _ _ _ equilibrium. Fill in the blank.
A. Stable equilibrium
B. Unstable equilibrium
C. Neutral equilibrium
D. All of the above

Answer 1

If the body returns to its original state after small disturbance, then it is said to be in state of equilibrium.

Complete step by step answer:
An equilibrium is said to be stable if the system returns back to its original state after small disturbances.
If the system does not return back after small disturbance then it is called as unstable equilibrium. A cone which is resting on its apex is an example of unstable equilibrium. If we touch it little, it will fall and cannot come to its original position on its own.
In our case, the ball is located in a spherical pool or spherical deepening.

If we touch the ball a little, it will move and again come back to its original resting position. Hence, it is in a state of stable equilibrium. Therefore, the correct option is (A), stable equilibrium.

So, the correct answer is “Option A”.

Note:
To answer these questions, we have to imagine what will happen if we touch the body. The body is in equilibrium; whether it will move away or come back to its original state.