# How to solve for bending moment?

airstrike_ola
Hello, I'm a newbie here, please help me to solve for the bending moment of my design airplane. I want to know if my wing spar is strong enough to support the weight of my design which is 490 lb. I want also to know if what is the breaking point of the wing spar. Please see the attached picture.

Thank you...

#### Attachments

• My Design.bmp
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$$\sigma = \frac{My}{I}$$