The Principle of Moments - A Level Physics

[@meetdholakia2558]

in 7 minutes, i learned a lot..!!

[@DarthGrogu01]

Thanks Dave 👍

[@alexanderdonlon3734]

Learnt more in this than a 6 hour lesson

[@ratfay]

why is ur lesson 6 hours

[@BZoneC0WS]

You're really good man. Keep it up!

[@paolariemer3536]

You explained it very well! Thank you!

[@jaylisarapa6400]

Thanks for the explanation.From Papua New Guinea 🇵🇬.

[@jeffjeffson5967]

5:37 Why can we ignore the horizontal component of the force?

[@glau9409]

Will a force parallel to the lever and have perpendicular distance from the pivot produce moment?

[@darcy4522]

Would you please do a few videos breaking down the substituting formulas in the multiple-choice questions that involve algebra. Some are so tricky, and nobody seems to break the math down. Hope I make sense.

[@kingredarrow2986]

Thanks for the help :)

[@ianjaydelosangeles3173]

Why does the theta in the pivot the same in the force actiing on it? Im a noob help:'(

[@TimLoveguitar]

Thank you. I was stuck on this

[@SabrinaXe]

But how is that 90-θ to begin with

[@SabrinaXe]

Nvm, it's because the dotted line is perpendicular to the black surface

[@aniruddhasharma5738]

when do you use fxsin(theta)?

[@EminTown]

It's just about the angle you are considering.He is considering the angle relative to the line that is perpendicular to the distance line - as seen at 4:37. If he considered the angle relative to the distance line itself, then sine, which is 90 - theta, is used.

[@mechailreydon3784]

Golden!

[@abschy648]

Could you give real Values instead because the letters confuse me on which are the actual unknowns (what you're trying to work out)!

[@pruke8720]

He's trying to work out the vertical component of an angled force, then he multiplies this by x to figure out the moment caused by that force.

[@emaanfatima8118]

3:06 how this ange is thetha

[@carultch]

Vertical angles. I.e. angles that are directly across a pair of intersecting straight lines from each other.

[@adxm2777]

At 3.15 why is theta next to the pivot??

[@carultch]

The first theta above the beam in the diagram is given. The theta across from it, is a vertical angle, which therefore means it is equal. Next to this theta, is the complimentary angle of theta, which is 90 deg - theta. Since angles in a triangle have to add up to 180 degrees, and since the angle by the square box is defined as 90 degrees, the remaining angle is theta, when we subtract 180 deg - 90 deg - (90 - theta).

[@Wessam12345678910]

(y)

[@gabrielbotchway7121]

💯✍🏼

[@bubisalvati2751]

Omg lol