Cálculo dos momentos de primeira ordem

$$\bgroup\color{black} Q_x = \int \overline{y}_{el} dA = \int_{... ...{1}{2} \int_{0}^{4} \left( \frac{3}{8} x^2 \right)^2 dx \egroup$$

$$\bgroup\color{black} Q_x = \frac{9}{128} \times \frac{4^5}{5} = 14.400 \egroup$$

$$\bgroup\color{black} Q_y = \int \overline{x}_{el} dA = \int_{... ...{3}{8} x^2 \right) dx = \frac{3}{8} \int_{0}^{4} x^3 dx \egroup$$

$$\bgroup\color{black} Q_y = \frac{3}{8} \times \frac{4^4}{4} = 24.000 \egroup$$