Science, asked by Darklaggy00, 1 year ago

What is meant by velocity ratio of a lever is 3 and efficiency of a pulley is 60percent

Answers

Answered by kalyani1234

Answer:

mechanical advantages is the ratio of load to the effort . velocity ratio of level is 3means distance travelled by effort is 3times the distance travelled by the load . efficiency of the pulley is 60% means 40% of the energy is lost in the machine due to friction

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