A block and tackle system has 6 pulleys. If the efficiency of the machine is 60%, determine its mechanical advantages.

By: |Published on: May 22|Categories: Physics WAEC| 0 comments

A. 12.0
B. 10.0
C. 3.6
D. 1.8

Correct Answer: Option C

C. 3.6

Explanation

M.A = (Z×V.R)/100 = (60×5)/100 =3.6

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