Question

if the fulcrum of a crowbar, of total length 200 cm, is at a distance of 40 cm from the load, what is the mechanical advantage of the crowbar?​

Answer 1

load arm ( L.A) = 40 cm

effort arm ( E.A ) = 200 - 40

= 160 cm

:- M.A = E.A ÷ L.A

= 160 ÷ 40

= 4

:- M. A = 4

hope it helps..