- #1
Wimpalot
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Homework Statement
A large 30000 L aquarium is supported by four wood posts at the corners. Each post has a square 6.00 cm x 6.00 cm cross section and is 90.0 cm tall. Take Y=10^10 for wood
Homework Equations
ΔL = FL/AY
F = ma
ρ = m/V
The Attempt at a Solution
So the total area is 0.06 * 0.06 * 4 = 0.0144m2
The length of each post is 0.9m
The total mass of water is 30000kg (taking the density as 1kg/L)
Meaning the weight is 30000*9.8 = 294000N
And Y=1010
Which gives:
ΔL = (294000*0.9)/(0.0144*1010
= 0.00184
But this is apparently wrong. I have no idea what I did wrong