A block and tackle system has 6 pulleys. If the efficienc...
A block and tackle system has 6 pulleys. If the efficiency of the machine is 60%, determine its mechanical advantages
12.0
10.0
3.6
1.8
Correct answer is C
M.A = \(\frac{Z \times V.R}{100} = \frac{60 \times 5}{100} = 3.6\)