A uniform metre rule between horizontally on a knife edge placed at the 58cm mark when a weight of 20gf is suspended from one end.
(i) Draw a diagram of the arrangement.
(ii) What is the weight of the rule?

Explanation

To solve the problem step by step, we will first draw the diagram of the arrangement and then calculate the weight of the uniform meter rule.

### Step 1: Draw the Diagram

1. **Draw a horizontal line** to represent the meter rule. Label the left end as point A (0 cm) and the right end as point B (100 cm).
2. **Mark the center of the meter rule** at the 50 cm point.
3. **Indicate the knife edge** support at the 58 cm mark.
4. **Draw an arrow** downward from point A to represent the weight (20 gf) suspended from one end.
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