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SEMESTER:- 2^nd semester

SUBJECT:-ENGINEERING MECHANICS

CHAPTER : 5

TOPIC : SIMPLE MACHINE

PREPARED BY :-

ER.B.C.Mohanta

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Mechanical advantage is a measure of the ratio of output force to input force in a system, used to analyze the forces in simple machines like levers and pulleys. Despite changing the forces that are applied the conservation of energy is still true and the output energy is still equal to the input energy.

Velocity ratio of simple machine is the ratio of distance travelled by the effort to the distance travelled by the load in the machine. As velocity ratio or ideal mechanical advantage is a simple ratio of two distances, it also does not have the unit. The friction is not involved in it.

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