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# A body of mass 120g placed at the 10cm mark on a uniform metre rule makes the ru...

### Question

A body of mass 120g placed at the 10cm mark on a uniform metre rule makes the rule settle horizontally on a fulcrum places at 35cm mark. Calculate the mass of the rule

### Options

A) 60g

B) 80g

C) 120g

D) 200g

The correct answer is D.

### Explanation:

m = $$\frac{25 \times 120}{15}$$

= 200g

## Dicussion (1)

• m = $$\frac{25 \times 120}{15}$$

= 200g