State the kind of lever which always has mechanical advantage less than 1. Draw a labelled diagram of such a lever.

The lever for which mechanical advantage is less than 1 has:

Name the type of a single pulley that has an ideal mechanical advantage equal to 2. draw a labelled diagram of the pulley mentioned by you.

In which direction does the force need to be applied, when a single pulley is used with a mechanical advantage greater than 1 ? How can you change the direction of force applied without altering its mechanical advantage ? Draw a labelled diagram of the system.

Class III levers have mechanical advantage less than 1. why are they then used ?

Name the structure in leaves through which gaseous exchange takes place. Draw a labelled diagram of it.

Define mechanical advantage of a lever.

Name the type of single pulley that has a mechanical advantage greater than one?

Mechanical advantage is greater than 1 when the load is greater than the effort.

Mechanical advantage is less than 1 when the fulcrum is closer to the load than the effort.

In a class-one lever, mechanical advantage can be either less than 1 or greater than 1.