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A ramp makes pulling a cart up a hill easier. Less force is needed to pull the cart up alonger hill. How can you tell if this is mechanical efficiency?

A ramp makes pulling a cart up a hill easier Less force is needed to pull the cart up alonger hill How can you tell if this is mechanical efficiency class=

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The correct answer is that the longer the hill, the larger the output force. If a ramp makes pulling a cart up a hill easier, that is because it has less force needed to pull the cart up along the hill. It is mechanical efficient simply because the longer the hill, the larger the output force being exerted. 

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