The model we'll use is b. 5/3 = 40/w
The mass of the shorter bar is 24 kg.
To solve for the problem, using the formula above, it will looks like this
5/3 = 40/w -- cross multiply
(5)(w) = (40)(3)
5w = 120 -- isolate the w
5w/5 = 120/5
w= 24
1$7+p =www to the 5th so your correct
When dividing by zero you can’t divide anything With it and it can’t equals zero because that would be wrong it would have to be undefined