WAEC - Physics (2002 - No. 16)
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
คำอธิบาย
M.A = \(\frac{Z \times V.R}{100}\)
= \(\frac{60 \times 6}{100}\) = 3.6
M.A = \(\frac{Z \times V.R}{100}\)
= \(\frac{60 \times 6}{100}\) = 3.6