Moments of a Force | Horizontal beam in equilibrium on 1 support

Here I look at the moments of forces acting on horizontal beams resting on 1 support in equilibrium.

[topaussiemezza]

Clear & good stuff. Crazy that this is from 2012, already.

[amrinahmed]

Crazy stuff man. Love it. Love from 🇧🇩 Bangladesh

[Katielizc]

I'm really struggling with this part of physics but this video is really helpful, so thanks a lot :)

[jhonnybhai]

Thank you Sir...the video is old but it amazing... understood the concept without any probs..(much better than my teacher).
Watching in 2019

[ExamSolutions_Maths]

Sorry, but I am confused by your question. I did convert all the forces to Newtons and to do that we multiply by g. g being 9.8

[ExamSolutions_Maths]

It is. It is the only upward force supporting the downward forces of the weight of the plank and children

[LondonWalkability]

why is the contact force (R) not factored in for the kids on the bench?

[eeshairfan]

Sir, why do we not take into account the contact force of the children? why do we not include those in the equation as well?
thank you so much, your work has helped me loadz!

[emad]

Sir, can we first convert all the forces to newtons so we don't get confused with g ? also we don't need to multiply it by 9.8 ?

[emad]

I got it, thank you, i made a mistake, but thank you anyway :)

[olamijiodunlami]

what did u divide b 27g to give 264.6N

[ssajid]

sir, at 19:08, I took moments in a clockwise direction, and I got M= 11 kg, I dont know where I went wrong!

[ExamSolutions_Maths]

Hope you don't drop off to sleep!

[ssajid]

Oh sorry, I know now! I done 4g*3, as opposed to 4g*4 !!!

[ExamSolutions_Maths]

Difficult to say without seeing your working.