Find the Resultant Force using the Parallelogram Method

This video shows how to find the resultant force of two vectors using the parallelogram method. We draw a parallelogram to help us find the resultant force which is the sum of the two vectors. We then use Law of Cosines to find the resultant force.

[@sleepless8823]

I've got to work on my report on Gravesand's apparatus which requires parallelogram method to find the resultant force and this vid really helps me out. Online classes are so tedius, Thanks a lot .

[@josedou6312]

Thank you, that was what I needed in my first lecture of vectors in a mechanical engineering book.

[@MathandStatsHelp]

You're welcome. Glad it was what you were looking for

[@juanahjjo6685]

You're the best you just helped me with a problem I battled with for a year now thank you👏❤

[@eliotlaurent3278]

very straightforward and efficient. thanks

[@Zhinoi]

To think my geometry teacher said I wouldn't need to remember triangle theorems... Well here I am in statics 😅. Great explanation!

[@dancinglikecrazy5510]

THANKKKKK YOUUUU I was soo lost you had no idea lmao

[@crappycapybaras]

this really helps me a lot 😭😭 I hope I won’t fail my physics test tmr😩🤦‍♀️

[@MathandStatsHelp]

I'm glad it helped you. I wish you the best on your test!

[@user-ho1ns9tn5x]

Thanks for your good explanation

[@diamond6162]

That was awesome but can you do one on how to also find the angel of the new Force

[@johnkupa8885]

how do you find the direction of the the resultant force that you've found??

[@laibahamid8233]

Same question

[@shinelikeadiamond9935]

How to do it without using cosine rule ??

[@heshmaniyaz8069]

Draw a scale diagram, and measure the diagonal using a ruler, and convert it to the force unit using the scale eg 1cm:2N

[@adeoyeaire9076]

Straight to the point. Please can you break down the pallelogram law ,🙌🙌

[@shelbyoxenford3426]

Very thorough! Thanks bunches!!!

[@oduromaxwell]

you are really the best ...very understandable.

[@MathandStatsHelp]

Glad you found it understandable!

[@reginat177]

Why can't my professor explain it this way. Totally understood it

[@ab_obada5012]

You found only R force but where is the direction ?

[@keishanimi2654]

Thanks loads

[@InguagRowak]

Could u show me how u put calculate in degree mode

[@rejopra6818]

Thank you

[@mikailmirzasafdar6803]

Nice video. How would one go about finding the direction of this resultant force?

[@jeremiahopadeji6629]

Very nice

[@Cathyjanes]

thank you so much. this was so helpful

[@user-we2do4tk9y]

Great❤❤

[@FenetAbilu]

When we use negative and positive in the formula?

[@james9531]

if the degrees are difffrent can you still use the same formla to find the

[@scored3003]

Thank you so much this really means a lot

[@MathandStatsHelp]

You're welcome. I always like to hear I am helping people!

[@sukarlynnenamo5870]

Thanks Alot....🙏🙏🙏🙏🙏🙏

[@AnzzCheatedOnMarkWithHaechan]

Tyssm 💗💗

[@rubentuting525]

how about the location theta?

[@bryansanqui8982]

The best

[@somebye2992]

Can u pls make a video how can u draw a parallelogram when both arrows oppositely

[@somebye2992]

For instance when the arrow is pointing from C to A

[@khuziwe.sithole3079]

THAAANNNKKK YYYOOOUUUU!!!!!

[@donkordavidtetteh116]

I have more explanation on how you get the angle for the cos

[@bosej.aikore5930]

Please, if you want to find the resultant of the force along AC in the diagram?

[@MathandStatsHelp]

What other information are you given?

[@kyanzuniga9721]

THANK YOUUUU!!

[@MathandStatsHelp]

You're welcome

[@tahseensaad7860]

what is the existence of(2) in ( 2abcos135)? is it because we have 2 forces or is there some point behind it? please if you could explain why the law is like that?

[@MathandStatsHelp]

It has to do with the derivation of the Law of Cosines. The Pythagorean Theorem, a^2+b^2=c^2, only applies to right triangles. The Law of Cosines applies to all triangles and is derived using two right triangles within the given non-right triangle. You can Google derivation of Law of Cosines to see how it is derived. It's very hard to type out the process in a reply.

[@bababaykaa9613]

Great;)

[@nathanielloquinario2104]

Thank you 😊😊

[@MathandStatsHelp]

You're welcome!

[@cipherbenchmarks]

how do you virtualize the ti-84 like that

[@MathandStatsHelp]

It's the teacher software from TI-84.

[@ambelasistin732]

To get the angle of c, why 180°?

[@MathandStatsHelp]

Since it forms a parallelogram, the consecutive interior angles (angles next to each other) are supplementary.

[@ambelasistin732]

Thank you very muchhhh

[@sirpanda5280]

how did you get the calculator on your computer?

[@MathandStatsHelp]

It's the teacher software that I use that I got from Texas instruments. I think they make a student version too, but I'm not sure.

[@jhonahronbunye6424]

Kulang po!! Nasaan na 'yong s apangatlong quadrant

[@discordequalpunk]

how to find this without angles?

[@MathandStatsHelp]

I would need more information as to what you are given to be able to help.

[@wacaalbulsho]

Can I get that calculator app

[@MathandStatsHelp]

It's the teacher software. I know TI has a student version, but not sure how expensive it is.

[@mattjackson4177]

Why can’t you just measure the length of c

[@MathandStatsHelp]

It's not drawn to scale. Sometimes you have things that can't be measured directly, which is why we use Law of Sines and Cosines to help with measuring things indirectly.

[@mattjackson4177]

Math and Stats Help Ah thanks, helps a lot

[@nullbeyondo]

ᵒᵏᵃʸ

[@sharoonaftab8894]

I don't understand how the angle c is 180-45? Please help with this.

[@MathandStatsHelp]

Since the opposite sides of parallelograms are parallel, the rules for parallel lines apply. The two angles are same side interior angles and they are always supplementary. Supplementary means they have a sum of 180°.

[@sharoonaftab8894]

@@MathandStatsHelp thanks ! That does ring a bell from the geometry class

[@loidendapewa]

Thanks for making me understand

[@MathandStatsHelp]

You're welcome.