The diagram below shows a lever in use. (a) To which class of lever does it belong ? Give one example of this class. (b) How will the mechanical advantage of lever change if load is shifted towards the fulcrum without changing it's dimensions.

The diagram below shows a lever in use. (a) To which class of lever

1.	The diagram below shows a lever in use. (a) To which class of lever does it belong ? Give one example of this class. (b) How will the mechanical advantage of lever change if load is shifted towards the fulcrum without changing it's dimensions.
Answer» Solution :(a) The fulcrum F is in between the LOAD and the EFFORT, so it is a class I lever. A pair of pliers is an example of class I lever. (b) The mechanical ADVANTAGE of the lever would increase if load is SHIFTED TOWARDS the fulcrum without changing its dimensions.