Name the pulley which has no gain in mechanical advantage. Explain, why is such a pulley then used ?
A single fixed pulley has no gain in mechanical advantage. It is used to lift load by changing the direction of the lifting force.
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 the force must be applied, when a single pulley is used with a mechanical advantage greater than one?