Give conditions for mechanical equilibrium.

Explanation

To determine the conditions for mechanical equilibrium, we need to consider both translatory and rotatory equilibrium. Here’s a step-by-step solution:

### Step 1: Understand Mechanical Equilibrium
Mechanical equilibrium occurs when a system is in a state of balance. This means that the system is not experiencing any net forces or net torques acting on it.

### Step 2: Conditions for Translatory Equilibrium
For a system to be in translatory equilibrium:
- The **net force** acting on the system must be **zero**.
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