Quotation from: General Science

Written by: Bertha M. Clark


One of the most useful levers of this type is the wheelbarrow (Fig.
99). The fulcrum is at the wheel, the force is at the handles, the
weight is on the wheelbarrow. If the load is halfway from the fulcrum
to the man's hands, the man will have to lift with a force equal to
one half the load. If the load is one fourth as far from the fulcrum
as the man's hands, he will need to lift with a force only one fourth
as great as that of the load.

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