A particle of mass 1 kg is released from rest at a point where gravitational potential is 5 J/kg. After some time, it passes through a point B with a speed of 1 m/s. What is the gravitational potential at B ?

Explanation

To solve the problem, we will use the principle of conservation of mechanical energy, which states that the total mechanical energy (kinetic energy + potential energy) in a system remains constant if only conservative forces (like gravity) are acting on it.

### Step-by-Step Solution:

1. **Identify the given data:**
- Mass of the particle, \( m = 1 \, \text{kg} \)
- Initial gravitational potential at point A, \( V_A = 5 \, \text{J/kg} \)
- Speed at point B, \( v_B = 1 \, \text{m/s} \)
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