The law of the machine is(where P = Effort applied to lift the load, m – McqOptions

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1.	The law of the machine is(where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.)
A.	P = mW - C
B.	P = m/W + C
C.	P = mW + C
D.	P = C - mW
Answer» D. P = C - mW

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