Question

What do you mean by MA of a lever is 3,VR of a lever is 4 and efficiency of machine is 60%

Answer 1

Answer:

Let me explain you.. Explanation:V.R of a lever is 3 means effort distance of the lever is 3 times more than the effort distance of the load. and. Efficiency of a lever is 60% means 40% of the energy is wasted due to friction as no machine is Friction less.

Explanation:

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Answer 2

Answer:

V.R of a lever is 3 it means that effort distance is 3 times of load distance and M.A of a lever is 4 it means that the load is 4 times of effort. Also, efficiency of a machine is 60% means that the machine converts 60% input work into output work and 40% is lost due to friction. HOPE THIS WILL BE HELPFUL TO U