Please solve question no.9.

Dear Student
(a) This is a class II lever.
(b) Given: FA=80 cm,
AB = 20 cm,
BF= FA+AB=100cm
Mechanical advantage M.A = BF/AF = 100/80 = 1.25
(c) Effort (E) = Load (L)/M.A = 5/1.25 = 4 Kgf

Regards

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