Moments of a Force | Horizontal beam in equilibrium on 2 supports

Here I look at the moments of forces acting on horizontal beams resting on 2 supports in equilibrium.
Moments of a force playlist: • Moments - Rigid bodies...
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[@josephrobinson9526]

I thought the ruler idea was very good, really helped me to understand which way the forces were turning which I struggled with before this video

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Thank you very much Sir for the RULER IMAGINATION METHOD, for the first time i can say i understand moments of forces , you made it clear for me.. God bless you

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Thank you so much. This was helpful. Will you please show how you draw a bending moment diagram using this method...😊

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[@Fun_Dealer]

Hello, great video! How can I calculate this for an item of known weight except I don’t know it’s in equilibrium and the reaction force ?

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[@zohaibafzal7785]

So is R = to the Weight acting downwards Because i jst got a question like tht but they r asking about the weight imstead of R

[@majidsubhani1823]

Thanks sir

[@chooga4eva]

are reaction forces only at supports? are there reaction forces at the ends of the beam as well?

[@ExamSolutions_Maths]

Another word for 'reaction force' is called 'contact force'. So you only get these forces when objects are in contact with each other. So there will be no reaction forces at the ends of the beams.

[@nhyirasefa-badu2110]

Thank you 😭😭

[@ExamSolutions_Maths]

You're welcome.

[@stefaniebabiolakis2724]

If there is no additional load and the beam’s supports are symmetrical about the centre of the beam, are the upward forces from each support equal?

[@Fartcat6992]

Yep

[@hallowvalor3477]

Why is m(c) equal to zero? If it’s at equilibrium wouldn’t that mean m(d) is equal and opposite to m(c)? Sorry I’m new to this stuff

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You are intelligent

[@lght6311]

what happens if one side has no weight would u include one end in ur question

[@ExamSolutions_Maths]

If no weight were hanging from one end of the rod then I would still draw the rod but leave out the hanging weight as there is not one present. I hope I have answered what you asked?

[@ax3199]

i know this is stupid to ask but is it possible to take moment from A/B?

[@mihirshah3332]

Nope. There is no fulcrum[pivot] to it wouldn't rotate.

[@IsmailPbx]

At 12:22 shouldn't the answer be in Newton METRES?

[@ExamSolutions_Maths]

Not at all, it is a force, not a moment.

[@DanielBoakye-ic2cr]

How did u get the 28g?

[@tairenjansevanvuuren7067]

He skipped a step answer was -28g but if you move -28g to the 0 side -28 becomes positive 28

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Fucking right dodgy,it is a good video!