In a lever system the load is 400 N and the effort required to lift the load is 100 N what is the mechanical advantage of this lever system?

To find the mechanical advantage of a lever system, you need to divide the load by the effort.

In this case, the load is 400 N, and the effort required to lift the load is 100 N. So, we can calculate the mechanical advantage as follows:

Mechanical Advantage = Load / Effort

= 400 N / 100 N

= 4

Therefore, the mechanical advantage of this lever system is 4.