How the screw acts as a inclined plane.

Draw a diagram to show a block and tackle pulley system having a velocity ratio of $3$ marking the direction of load (L), effort (E) and tension (T).

The pulley system drawn lifts a load of $150 \mathrm{N}$ when an effort of $60 \mathrm{N}$ is applied. Find its mechanical advantage. Is the above pulley system an ideal machine or not?

For a given height h, _____the length of the inclined plane, lesser will be the effort required.

Observe the given diagram below, and calculate its mechanical advantage and the effort needed to lift the load if, $AB=3 \mathrm{m}$ and $FA=30 \mathrm{cm}$.

In a movable pulley, the load is $100 \mathrm{N}$. The mechanical advantage, effort applied and V.R respectively, if the efficiency is $100$ percentage are: