So I'm designing an outdoor lamp post and trying to calculate whether it will withstand the heavy winds at the worst case scenario. Here are the parameters and what I've done so far:
The lamp post is 2.8m tall with the base radius of 0.9m. Assuming that the post itself, m1=50kg and the base, m2=30kg, the center of mass stands at 1m above the base. I have chosen the wind speed that it needs to withstand as 20m/s which corresponds to Beaufort Scale 8.
Through the wind load formula, F=A * P * Cd, I found out that the force in which the wind exerts on the body is roughly 400N.
Assuming that 400N of force is applied to the lamp post sideways at the tip of it, how can I calculate whether it will tip over or not? If not, how can I figure out how much I need to increase the weight of the base to withstand the wind forces? Does torque equation help? Any answers that could point me in the right direction are much appreciated.