The velocity ratio of a machine is 5 and it efficiency is 75%.what effort would be needed to lift a load of 25N with the machine?

4 answers

(25/5) / .75
e = L/E * 1/Vr = 0.75,
25/E * 1/5 = 0.75,

e = efficiency.
E = effort in Newtons.
Vr = velocity ratio.
80%/5=2000N
Calculate for M.A first
Then, get ur M.A as 3.75
And M.A = load ÷effort
E= 6.666N
OR
E ≈6.67N