A uniform metre rod is balanced at the 70 cm mark by suspending a weight of 50 gf at the 40 cm mark and 200 gf at the 95 cm mark. Draw a diagram of the arrangement and calculate the weight of the metre rod.

Explanation

### Step-by-Step Solution:

1. **Understanding the Problem**:
We have a uniform meter rod that is balanced at the 70 cm mark. We need to find the weight of the rod (W) given two weights: 50 gf at the 40 cm mark and 200 gf at the 95 cm mark.

2. **Drawing the Diagram**:
- Draw a horizontal line to represent the meter rod.
- Mark the 0 cm to 100 cm scale on the rod.
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