Question

A 750 N man pushes on a 500,000 cm wide wall for 250 s but it does not move. How much work does he do on the wall if he angles his arms 45 degrees from the wall?

Answer 1

Answer: Zero work

Step-by-step explanation:

The Work
`W` done by a Force
`F` refers to the release of potential energy from a body that is moved by the application of that force to overcome a resistance along a path
`d`.

`W=(F)(d)`

It should be noted that it is a scalar magnitude, and its unit in the International System of Units is the Joule (like energy). Therefore, 1 Joule is the work done by a force of 1 Newton when moving an object, in the direction of the force, along 1 meter.

In this sense, when you push an object and it does not move (as this case with the wall) there is no work.