Draw diagrams to illustrate the positions of fulcrum, load and effort, in each of the following :
(a) A seesaw (b) A common balance
(c) A nut cracker (d) Forceps.
(a) A seesaw
(b) A common balance
(c) A nut cracker
(d) Forceps
In fig shows a lemon crusher.
(a) In the diagram, mark the position of the fulcrum F and the line of action of load L and effort E.
(b) Name the class of lever.
State the class of levers and the relative positions of load (L), effort (E) and fulcrum (F) in (a) a bottle opener, and (b) sugar tongs.
The lever for which the mechanical advantage is less than 1 has the :
(a) fulcrum at the midpoint between the load and effort.
(b) load between the effort and fulcrum.
(c) the effort between the fulcrum and load.
(d) load and effort acting at the same point.