a lamb grows with its mass proportional…

A lamb grows with its mass proportional to the cube of its length. When the lambs length changes by 15.8% its mass increases by 17.3kg. Find the final mass.

Really stumped thanks for any help

mf=kxf3
length change by 15.8%
xi+.158xi=xf
xf=1.158xi

mf=k(1.158x)3
mf=1.55kx3

I couldnt get the right answer because at this point, my book shows kx3 turning into mi and continuing the problem from there. Why?

kx3=mi
mf=1.55mi
mi=mf/1.55

http://ift.tt/1drLc1k

Leave a comment

Your email address will not be published.


*


Show Buttons
Hide Buttons