A simple machine has the law E=0.3F +0.2 kN and a VR of 7. Determine (a) the limiting MA, (b) the limiting effciency, (c) the effort required to overcome friction when the load is zero. A simple...

A simple machine has the law E=0.3F +0.2 kN and a VR of 7. Determine (a) the limiting MA, (b) the limiting effciency, (c) the effort required to overcome friction when the load is zero.

A simple machine was found to require an effort of 10 N for a load of 30 N and an effort of 68 N for a load of 300 N. Determine the law of the machine.