2nd Class Levers
With a class 2 lever, the fulcrum is at one end, the effort is at the other end and the load is in the middle. A wheelbarrow is an example of a class 2 lever.
Other examples include bottle openers, nut crackers and foot pumps.
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2nd Class Example |
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A class two lever allows a large load to be lifted by a smaller effort. The calculations are as before: load x distance of load from fulcrum = effort x distance of effort from fulcrum. Because the load is always closer to the fulcrum, the effort is always less than the load.
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