Physics, 28.10.2020 08:00, nosugh

The velocity ratio of a pullery systerm is 2 ,if the efficiency is 75% what is mechanical advantage? If the load is 120N what work is done by the effort if the load is lifted 0.5m?How much energy is wasted?

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The velocity ratio of a pullery systerm is 2 ,if the efficiency is 75% what is mechanical advantage?...