🔺17 - Moment of a Force About a Specified Axis 3D - Vector Analysis: Example 1 - 2

[@nickbelko5569]

Great video explained a full lecture much better in just 20 minutes. Thanks man !

[@SkanCityAcademy_SirJohn]

Great 😃

[@LwandoTiya-tn3lj]

Absolutely amazing.

[@SkanCityAcademy_SirJohn]

Thanks so much

[@AlirezaAEEG]

Salam. Thank you.

[@SkanCityAcademy_SirJohn]

You are welcome

[@samarbader2761]

Amazing

[@SkanCityAcademy_SirJohn]

Thank you very much

[@philipagbugblah-ht1hd]

Thanks man

[@SkanCityAcademy_SirJohn]

You are most welcome

[@muyideenabdulsamad7795]

Please which textbook can you recommend for me sir for this topic

[@SkanCityAcademy_SirJohn]

RC Hibbeler

[@muyideenabdulsamad7795]

@@SkanCityAcademy_SirJohn thanks 🙏

[@SkanCityAcademy_SirJohn]

Most welcome

[@ademabdusemed1723]

Greate

[@SkanCityAcademy_SirJohn]

Thanks so much

[@DonerKebabMeMes]

How to calculate the moment about point O. can you tell me in detail

[@SkanCityAcademy_SirJohn]

th-cam.com/video/MLVdWMb7fno/w-d-xo.html it's so simple kindly learn from this video.

[@RonewaTshivhase-en5gt]

Why are we moving from point 0 for rB

[@SkanCityAcademy_SirJohn]

r is the position vector from O to any point on the line of action of the force F, the only way we can do that easily is to move from O to B

[@GraceAnkor]

Please why did you use rb

[@SkanCityAcademy_SirJohn]

We want to get the position vector directed from O to the line of action of F. The reason why we use rb is that, the tail of the vector at B is also a line of action of the force F because F passes through B.
We can't use O to the head (tip) of the force F because we can't determine the dimension from O to the head (tip ) of F.
So once we have a line of action through point B, it's wise we use that.
I hope you will understand now