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 $\frac{MA}{VR}\times \frac{100}{1}=efficiency$

LE1VR×1001=75 $\frac{L}{E}\frac{1}{VR}\times \frac{100}{1}=75$

1000E14×1001=75 $\frac{1000}{E}\frac{1}{4}\times \frac{100}{1}=75$

E=250×10075 $E=\frac{250\times 100}{75}$

E = 333.3N