When we apply a force on a wall of infinite mass but the wall remains at rest, have we done any work on the wall? Does the wall do work on us?

Explanation

To solve the question of whether work is done on a wall of infinite mass when we apply a force to it, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Work Done**:
Work done (W) is defined as the product of the force (F) applied and the displacement (d) in the direction of the force. Mathematically, it is expressed as:
\[
W = F \cdot d \cdot \cos(\theta)
...