Why does a Lever of the third order have a mechanical advantage of less than 1?
Explanation
State the kind of lever which always has the mechanical advantage less than 1. Draw a labelled diagram of such a lever.
Explain why the mechanical advantage of a class II lever is always more than 1.
Why does a Lever of second-order have a mechanical advantage of more than 1?
Why is the mechanical advantage of a lever of third-order always less than 1? Give one example of this class of lever.
In which situation does Lever of the first order have the mechanical advantage (a) more than one (b) less than 1?