From the ground floor a man comes up to the fourth floor of a building using a staircase. If the man comes up to the same floor using an elevator, neglecting friction, compare the work done by the man in the two cases.

Explanation

To compare the work done by the man when he ascends to the fourth floor using a staircase versus using an elevator, we can follow these steps:

### Step 1: Understand the Work Done
Work done (W) is defined as the force (F) applied to move an object through a distance (d). The formula for work done is:
\[ W = F \times d \]

...