State law of machine and explain its significance.

State law of machine and explain its significance.
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2 Answers

Answer :

Law of machine: The relation between the load lifted (W) and the effort applied (P) is known as the law of machine. This relationship, when plotted on a graph results in a straight line as shown below. The equation of this straight line is,

electronics2electrical.com 679 - .jpg

Where,

m = Slope of line = constant

c = Intercept on y axis = effort required to start the machine.


Significance of law of machine: With the help of law of machine one can find effort required to lift any given load and vice versa.
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Answer :

When we are using a machine to lift a weight, the work done is governed by the Law of Machine, which states that when on a machine (p) an effort is applied It has to be equal to the weight (w) of the load it will be lifting. Hence, p = mw + c where m and c are positive constants of the machine.
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