A boy of mass 50 kg standing on ground exerts a force of 500 N on the ground. The force exerted by the ground on the boy will be :

Options

A. 100 N
B. 200 N
C. 50000 N
D. 500 N

Answer

To solve the problem, we need to apply Newton's Third Law of Motion, which states that for every action, there is an equal and opposite reaction.

### Step-by-Step Solution:

1. **Identify the Action Force**: The boy exerts a force of 500 N on the ground. This force is directed downward due to gravity.

2. **Apply Newton's Third Law**: According to Newton's Third Law, the ground will exert an equal and opposite force on the boy. This means that the force exerted by the ground on the boy will be equal in magnitude but opposite in direction to the force the boy exerts on the ground.

3. **Calculate the Reaction Force**: Since the boy exerts a force of 500 N downward on the ground, the ground will exert a force of 500 N upward on the boy.

4. **Conclusion**: Therefore, the force exerted by the ground on the boy is 500 N.

### Final Answer:
The force exerted by the ground on the boy is **500 N**.

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