- #1
vmr101
Gold Member
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Homework Statement
Consider a lamina (two dimensional plate) with edges given by the lines y = sqrt(x) and
y = -x + 2x^(2), for which the density is given by P(x; y) = x.
(a) Define the domain of the lamina as the union of a Type 1 region and a Type 2 regions.
b) Calculate the mass.
Just looking for other peoples ideas for the domain, I have worked it out but am not sure if it is correct.
Thanks.
Homework Equations
The Attempt at a Solution
D = D(1) U D(2)
D(1) = 0≤ x ≤1/2 , -x+2x^(2)≤ y ≤0
D(2) = 0≤ y ≤1 , 1/4 (1 + sqrt(1+8y)≤ x ≤y^2
From this I got the mass equals 521/75.
I also tried calculating the mass from the domain just as a single typeI but got a mass of37/30.
Any help is appreciated. Thanks