math
posted by cynthia
the load which a crame can lift up is directly proportional to the mass and inversely proportional to the height through which the load is to be lifted. If a load of 40 and mass of 175gm is lifted through height of 286m from what load will be carried through height 50m given the mass as 250gm?

Reiny
L = km/h
when L = 40, m=175, h = 286 , (skipping the units)
40 = k(175)/286
k = 286(40)/175 = 2288/35
L = (2288/35)m/h , plug in h=50 and m=250
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