A simple machine of velocity ratio 20
is used to lift a load of 600N by appliying
an effort of 40 N.
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Explanation:
Velocity ratio of simple machine is the ratio of distance travelled by an effort to the distance ... Or, 40 x 5 + 20 (20 +5) = W x 25cm ... What load can be lifted if an effort of 400N is applied ?
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