Two bocks of masses 10 g and 20 kg are placed on the X-axis. The first mass is moved on the axis by a distance of 2 cm. By what distance should the second mass be moved to keep the position of the centre of mass unchanged?

Explanation

To solve the problem, we need to find out how far the second mass (20 kg) should be moved to keep the center of mass of the system unchanged after moving the first mass (10 g) by 2 cm.

### Step-by-Step Solution:

1. **Identify the masses and their initial positions:**
- Let the mass \( m_1 = 10 \, \text{g} = 0.01 \, \text{kg} \) (since we need to keep units consistent).
- Let the mass \( m_2 = 20 \, \text{kg} \).
- Assume the initial position of \( m_1 \) is at \( x_1 = 0 \, \text{cm} \) and \( m_2 \) is at \( x_2 = 0 \, \text{cm} \).
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