A window cleaner has a weight of 839.86 N. The window cleaner is cleaning windows on the 4th floor of a building at a height of 12 m. How much potential energy does the window cleaner have?

E = 10078.32 J

Explanation:

Given that,

The weight of a window cleaner, F = 839.86 N

The window cleaner is cleaning windows on the 4th floor of a building at a height of 12 m.

We need to find the potential energy of the window cleaner. We know that the potential energy of an object is given by :

E = mgh

Put values,

E = 839.86 × 12

E = 10078.32  J

So, the window cleaner will have 10078.32  J of potential energy.