Figure below shoes the use of a lever. (a) State the principle of moments as applied to the above lever. (b) To which class of lever does it belong ? Give an example of this class of lever. (c) If FA=10 cm, AB=490 cm, calculate: (i) the mechanical advantage, and (ii) the minimum effort required to lift and load (=50N).

Figure below shoes the use of a lever. (a) State the principle of m

1.	Figure below shoes the use of a lever. (a) State the principle of moments as applied to the above lever. (b) To which class of lever does it belong ? Give an example of this class of lever. (c) If FA=10 cm, AB=490 cm, calculate: (i) the mechanical advantage, and (ii) the minimum effort required to lift and load (=50N).
Answer» Answer :(a) load`xxFB=`effort`xxFA` (b) CLASS III, sugar TONGS (C) (i) M.A.`=(1)/(50),` (II) Effort=2500 N.