Respuesta :

jullisamendoza6
The answer is friction


The output work is always less than the input work because some of the input work is used to overcome friction
maxwellekoh

Answer:

Equal effort force

Explanation:

A class 1 lever has the support between the load and the effort hence the load tilts the plain at one end containing the support we would require an effort equal and opposite to the load to ensure movement .