Quotation from: General Science

Written by: Bertha M. Clark


Since work is equal to force multiplied by distance, the man has done
work represented by 200 x 6, or 1200. This is exactly the amount of
work which would have been necessary to raise the bowlder directly. A
man of even enormous strength could not lift such a weight (600 lb.)
even an inch directly, but a strong man can furnish the smaller force
(200) over a distance of 6 feet; hence, while the machine does not
lessen the total amount of work required of a man, it creates a new
distribution of work and makes possible, and even easy, results which
otherwise would be impossible by human agency.

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