A wheel and an axle is used to raise a load whose weight is 800N when an effort of 250N is applied. If the radii of the wheel and axle are 800mm and 200mm respectively, the efficiency of the machine is

By: |Published on: Nov 7|Categories: Physics JAMB| 0 comments

A. 90%
B. 80%
C. 85%
D. 87%

Correct Answer:

Option B – 80%

Users Also Read These:

SEE ALSO  At what position will an object be placed in front of a concave mirror in order to obtain an image at infinity?

Copyright warnings! Do not copy.