Which of the following conditions must be satisfied for a rigid body to be in st

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Question: Which of the following conditions must be satisfied for a rigid body to be in static equilibrium?

Options:

Correct Answer: Sum of forces is zero and sum of moments is zero

Solution:

A rigid body is in static equilibrium when both the sum of forces and the sum of moments about any point are zero.

Which of the following conditions must be satisfied for a rigid body to be in static equilibrium?

Which of the following conditions must be satisfied for a rigid body to be in static equilibrium?

Step 1: Understand what a rigid body is. A rigid body is an object that does not deform or change shape when forces are applied to it.
Step 2: Know what static equilibrium means. A rigid body is in static equilibrium when it is not moving and remains at rest.
Step 3: Learn about forces. Forces are pushes or pulls acting on the body. For static equilibrium, the total (sum) of all forces acting on the body must be zero.
Step 4: Understand moments (or torques). Moments are the rotational effects of forces about a point. For static equilibrium, the total (sum) of all moments about any point must also be zero.
Step 5: Combine the two conditions. A rigid body is in static equilibrium when both the sum of all forces is zero and the sum of all moments about any point is zero.

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