Question: Which of the following statements is true regarding the equilibrium of a rigid body?

Options:

1. Only forces need to be considered.
2. Only moments need to be considered.
3. Both forces and moments must be considered.
4. Equilibrium is not possible in rigid bodies.

Correct Answer: Both forces and moments must be considered.

Solution:

In the equilibrium of a rigid body, both forces and moments must be considered to ensure the body remains at rest.