Draw a neat labelled diagram showing a pulley being used to lift a load. How are load and effort related in an ideal situation?
Select the correct alternative :
A pulley is used because it
- has the mechanical advantage greatcr than one
- has 100% efficiency
- helps to apply the force in a convenient direction
- requires more effort to raise a less load.
State if the following statement is true or false :
A single movable pulley is a pulley that has its axis of rotation fixed.