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Figure below shoes the use of a lever. ...

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).

Text Solution

Verified by Experts

The correct Answer is:
(a) load`xxFB=`effort`xxFA`
(b) class III,
sugar tongs (c) (i) M.A.`=(1)/(50),`
(ii) Effort=2500 N.
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