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

Chidimmchibuike

5 years ago

Where is 5 coming from

Anuoluwapo1111

3 years ago

It is supposed to be 6 not 5 correct this

frickyfausty

3 years ago

Z=(M.A/V.R); 60/100=M.A/6; M.A=360/100; M.A=3.6

I.Gozie

1 year ago

The workings and formula used are incorrect.
The correct formula should be: M.A =
Efficiency X V.R
——–——————
. 100
not M.A = Z X VR
. -------------
. 100
Also, during workings, the person that solved it used 5 as the Velocity Ratio but the question said that the Velocity Ratio is 6.