Can work done by a non - conservative force be positive ?

Explanation

To determine whether the work done by a non-conservative force can be positive, let's break down the concepts step by step.

### Step-by-Step Solution:

1. **Understanding Non-Conservative Forces**:
- Non-conservative forces are forces where the work done depends on the path taken. Examples include friction, air resistance, and tension in a spring when it is not at its equilibrium position.

2. **Example Setup**:
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