To determine the center of mass using calculus, the area and moments about x and y must be determined. The moments are divided by the area to give the coordinates of the center of mass.
Continue ReadingFirst, find the area of the given curve. This can be done by evaluating the integral: A = |_(a..b) f(x) dx. If the area is between two curves, the area is found by evaluating the integral: A = |_(a..b) (f(x) - g(x)) dx.
To find the moment about x, use the integral: M_x = |_(a..b) ((1/2) * (f(x))^2) dx. The equation for finding the moment about y is: M_y = |_(a..b) (x * f(x)) dx. If the area is between two curves, the moments about x and y are found with the following equations: M_x = |_(a..b) ((1/2) * ((f(x))^2 - (g(x))^2)) dx, and M_y = |_(a..b) (x * (f(x) - g(x))) dx.
The coordinates for the center of mass are found by dividing the moments by the area. The x coordinate is found by the equation: x_bar = M_y / A. The y coordinate is found by the equation y_bar = M_x / A. The center of mass is (x_bar, y_bar).