Give example of each class of lever in a human body.
Class 1 lever - Nodding of head
2) Class 2 lever - Raising body weight on toes
3) Class 3 lever - Raising a load by the forearm
Select the examples of a lever in a human body.
Draw a labelled diagram of a class II lever. Give one example of such a lever.
Name the three classes of levers and state how are they distinguished. Give two examples of each class.