1. ## mass center

okay, i just need to know if i did this right or not.

the problem: find the coordinates of mass center by the region bounded by $\displaystyle x=5-y^2$ and $\displaystyle x=0.$

i graphed the situation, but i considered this function $\displaystyle y=\sqrt{5-x}$ to compute the coordinates. Do i need to duplicate the result to get the coordinates?

i'm a bit lost, thanks for the help.

2. Originally Posted by palpyko
okay, i just need to know if i did this right or not.

the problem: find the coordinates of mass center by the region bounded by $\displaystyle x=5-y^2$ and $\displaystyle x=0.$

i graphed the situation, but i considered this function $\displaystyle y=\sqrt{5-x}$ to compute the coordinates. Do i need to duplicate the result to get the coordinates?

i'm a bit lost, thanks for the help.

$\displaystyle y = \pm \sqrt{5-x}$

The Y coordinates will be pos/neg of the values you compute.
Since it is centered about the x-axis, the additional data is not necessary to determine the mass center, as you could consider only those ordinates in quadrant 1; which is what it appears that you are going to do.

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