Two bodies A and B having masses M and 3M respectively are kept at a distance 2.73 m apart. A small particle of mass m is to be place so that the net gravitational force on it, due to A and B is zero. What will be its distance from body A ?

Explanation

To solve the problem, we need to find the distance \( r \) from body A where the small particle of mass \( m \) can be placed such that the net gravitational force acting on it due to bodies A and B is zero.

### Step-by-Step Solution:

1. **Identify the Masses and Distance**:
- Mass of body A = \( M \)
- Mass of body B = \( 3M \)
- Distance between A and B = \( 2.73 \, \text{m} \)
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