The diagram below shows a lever in use:

(a) To which class of levers does it belong?

(b) Without changing the dimensions of the lever, if the load is shifted towards the fulcrum, what happens to the mechanical advantage of the lever?

(a) It belongs to second class lever as load is situated between fulcrum and effort.

(b) The mechanical advantage of the lever will increase when load is shifted towards the fulcrum.