For a self locking lifting machine the efficiency must be?

Question: For a self locking lifting machine the efficiency must be?

For a self-locking lifting machine, the efficiency must be 100% or greater than 1. This is because a self-locking lifting machine is designed to prevent the load from lowering by itself when the lifting force is removed. This is achieved through the mechanical advantage of the machine, which allows the input force to be greater than the output force, making the machine self-locking.

In an ideal self-locking lifting machine, the output work (lifting the load) would be equal to the input work (the force applied to the machine). However, due to frictional losses and other inefficiencies in real machines, the actual efficiency may be less than 100%. Therefore, it is important to design and maintain the machine to minimize these losses and ensure that the efficiency is as high as possible, ideally approaching 100%.

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