1. What is the relationship between force and the moment it produces in an object?
2. In a double-decker bus meant for tourists, all tourists wanted to sit on the upper deck. However the driver did not allow this. Why?
3. Differentiate between the tree types of levers with respect to the position of the load, effort and fulcrum. Draw labelled diagrams to represent each types of lever.
4. A single fixed pulley does not multiply force or speed. How then is it useful?
5. In what ways are machines useful to us?