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Question on: JAMB Physics - 2013

What effort will a machine of efficiency 90% apply to lift a load of 180N if its efforts arm is twice as long as its load arm?
A
80N
B
90N
C
100N
D
120N
Ask EduPadi AI for a detailed answer
Correct Option: C
M.A. = \(\frac{Eff \times V.R.}{100}\)

M.A. = \(\frac{90 \times 2}{100}\)

M.A. = 1.8

E = \(\frac{L}{M.A.}\)

E = \(\frac{180}{1.8}\)

E = 100N

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