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The ratio of load to effort is known as the mechanical advantage (MA)For example if you used a second class lever (like a wheelbarrow) to
The ratio of load to effort is known as the mechanical advantage (MA)For example if you used a second class lever (like a wheelbarrow) to move 200 lbs of dirt by lifting with only 50 lbs of effort, the mechanical advantage would be four. The mechanical advantage is equal to the ratio of the effort arm to resistance arm
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