1. ## Centre of gravity

The profile mof the tip of a blade has the equation
y=0.3 sinx for 0 < x > pie/2 Determine the centroid of profile

2. Originally Posted by Jaffa
The profile mof the tip of a blade has the equation
y=0.3 sinx for 0 < x > pie/2 Determine the centroid of profile
$\bar{x} = \frac{\int_a^b x \cdot f(x) \, dx}{\int_a^b f(x) \, dx}$

$\bar{y} = \frac{\int_a^b \frac{1}{2} [f(x)]^2 \, dx}{\int_a^b f(x) \, dx}$

an alternative is to use the second Theorem of Pappus.