what is meant by saying that the velocity of ratio is 3
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Velocity ratio of a lever is 3 means distance travelled by effort is 3 times the distance travelled by the load. Efficiency of the pulley is 60% means 40% of the energy is lost in the machine due to the friction.
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Velocity ratio of a lever is 3 means distance travelled by effort is 3 times the distance travelled by the load.
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