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5/31 MCQs for:
MECHANICS : ENERGY - Machines

A machine raises a load of 600 N through a distance of 2.5 m when an effort of 100 N moves through a distance of 20 m.

The efficiency of this machine is:

Which of the following machines is a type of lever?
In a machine with a mechanical advantage (MA) of 4 and a velocity ratio (VR) of 5, what is the efficiency?
Which of the following is an example of a third-class lever?
If the mechanical advantage of a pulley system is 6, what does this indicate?