Chapter 2, Problem 15RQ

What is the meaning of $\Sigma F=0$?

To determine

The meaning of $\Sigma F=0$.

Answer to Problem 15RQ

The meaning of $\Sigma F=0$ is that the body is in equilibrium condition.

Explanation of Solution

Force is the push or pull that, when acts on an object, can change shape or size. This quantity can also bring a moving object to rest or vice versa. When the sum of all the forces acting on the body is equal to zero, it means that the body is in the state of mechanical equilibrium or object is not accelerating. This is known as equilibrium law, which is represented by $\Sigma F=0$. The sign $\Sigma$ represents “the vector sum of”.

Conclusion:

Therefore, the meaning of $\Sigma F=0$ is that the body is in equilibrium condition.