Question 1 Report
A machine whose efficiency is 75% is used to lift a load of 1000N. Calculate the effort put in to the machine if it has a Velocity ratio of 4.
Answer Details
MAVR×1001=efficiency M A V R × 100 1 = e f f i c i e n c y
LE1VR×1001=75 L E 1 V R × 100 1 = 75
1000E14×1001=75 1000 E 1 4 × 100 1 = 75
E=250×10075 E = 250 × 100 75
E = 333.3N