The mechanical advantage of simple machine is 5,what does it mean

Hence, the mechanical advantage of a lever is always the same as the inverse ratio of the lever arm. If the input arm is 5 units long and the output arm is 1 unit long, the mechanical advantage will be 5, but if the positions are reversed, it will be 0.2.

Hope it's helpful to you

it about 600 mph from what i calculated

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i just did this and got a 100.