GCSE Physics - Resultant Forces & Free Body Diagrams #42

This video covers:
- What a resultant force is
- What free body diagrams are
- How to calculate the resultant force from a free body diagram
- The idea of splitting up the forces into horizontal and vertical components
General info:
- Suitable for all GCSE courses
- See below for whether it is higher or foundation tier for your exam board
- See below for whether it is triple or combined for your exam board
Exam board specific info:
AQA - Free body diagrams are higher tier only
IGCSE Edexcel - You don't need to know this content
Edexcel - Drawing and using free body diagrams is higher tier only
OCR 21st Century - Only need to be able to use scale diagrams if you're higher tier
OCR Gateway - Using free body diagrams is higher tier only
GCSE Chemistry playlist:
• GCSE Chemistry - Atoms...
GCSE Biology Playlist:
• Video
GCSE Physics Playlist:
• Video

[@Cognitoedu]

If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are:
- Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown.
- Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on.
- Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like.
- A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts.
- A comprehensive bank of past exam papers, organised both by year, and also by topic.
Amadeus & Tom

[@pir_adam1]

Bro this guy saves my life during exams

[@nuriyamohamed2312]

Ngl

[@potatoes4032]

Hi. I just want to say your videos are really helpful. Just a suggestion, but I would find it really helpful if you put the videos in playlists according to each topic. Like all the electricity in one playlist.

[@Cognitoedu]

Hey thanks for the comment and suggestion. We did consider it but a lot of the videos are tricky to put in a category. We use the numbers after each video instead so you know which videos go together when viewing the playlist 👍

[@oscarpeters103]

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keep up what you do, love your videos, super helpful!!

[@waelsshorts8500]

Understandable, good editing, good voice off and good explanation ;)

[@anushkakulkarni4335]

Thank you your video really helped I an definitely going to recommend it to my school 😃👏🏻👏🏻

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[@user-pe2lp1qc1y]

smash videos, really informative and comprehendible unlike other videos where sum random dude goes yapping bout finding X

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Who else is doing this 1 year early so they can assert dominance when learning the GCSE course to become successful in physics and get revenge on the classmate that called you dumb 3 years ago?

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[@I_Nido]

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[@diddy_bby7352]

what is the diffrence between resultant force and net force?

[@Ashi_Latif]

its the same thing

[@spartanfromgreece7490]

I APPRECIATE YOU IN BIG WORDS
GREAT EXPLANATION
LOVELY

[@St-jh8pk]

A very good, clear video. Thank you 👍

[@taranmannyt4764]

Who else is doing this for an assignment?

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me

[@FrostedIce_]

not me

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Me

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[@CharlieChopCham]

Also I watched this before you Elias!!!

[@theosmith6904]

These videos are great and I'm going to tell my school about them but it might be a good idea to say what parts are for separate science only

[@Cognitoedu]

Hi Theo thanks so much for the support - we usually leave this info in the description but obviously please let us know if we’ve missed one :)

[@theosmith6904]

Thanks I didn't realise that :)

[@AliKayani-ng6qt]

Hi what to do if you get a number from the vertical and horizontal component both?

[@user-lk9im6sx5f]

this is really helpful thank you

[@SAULGOODMAN478]

thank you for helping me out.

[@musajaved9862]

Just wanted to ask what would happen if there was a force for the vertical component and horizontal component after you have subtracted them? What would you have to do with the two values you have? I love your videos and you have helped me out a lot. Keep up the good work.

[@MI-lo2hj]

the plane would go up/down AND go forwards/backwards
so the resultant arrow would be in the middle of the 2

[@musajaved9862]

@@MI-lo2hj Oh OK thanks for replying to my comment and clarifying. It is much appreciated!

[@MI-lo2hj]

@@musajaved9862 np

[@Jack-bi8mg]

This is for physics paper 2 right? Also is the first video for paper 2 or do they start earlier on?

[@aymanhalim990]

Thanks a bunch to you Sir for making this concept crystal clear!
I have a question:"Is equilibrium same as terminal velocity in here since the resultant force is 0?"
Could you please 🥺 clarify my doubt,Sir?

[@nah15]

could an object at equilibrium move even if there is no resultant force?

[@user-ln8ij1iq1r]

no
@@nah15

[@user-du2qm9ir6r]

thank u very much this has helped me alot

[@saraabusafyeh5908]

Hi I’m in love with these videos I told my teacher about them and she shows us them every lesson but I don’t get when to know if it’s to the right or to the left ?😅

[@ShreyBrawlStars]

The resultant force acts to the right if the arrow pointing right is longer than the one pointing left (or if it’s labelled with a bigger number)
If the arrow pointing left has a bigger number then the resultant force acts left.

[@Jennie-od2pu]

When subtracting the vertical forces, do you subtract the lift from the weight or the weight from the lift? It wasn’t specified..

[@user-bq1rj8vy9g]

It is usually the biggest number subtracted by the lowest one.

[@rr1609]

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[@CharlieChopCham]

Omg my favorite video!

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[@gamer_ban1232]

Thanks i found it useful.

[@Kris_413]

3:09 So if the left and right are the same hence the force being zero, does that mean it's at continuous rest (Newton's second law of motion), or is there a uniform motion? [I'm guessing it's at rest]

[@lifesasweetcupcake123]

It will either remain at rest or continue to move in a constant speed.

[@fineraxis]

Exams are very easy after watching this

[@raspberry7847]

It was really helpful! Thanks a bunch

[@imacupofteapot]

always a life saver

[@sandyrcb1637]

Can you please make video for resultant vector

[@MelonDoggoYT]

Definitely love homework

[@Yashux29]

Awesome❤cherish your efforts

[@shadowzakharov8227]

I all understand in your videos

[@cynthianamps1029]

What if we had 90,000N on the right and 120,000N on the left what would be our resultant force?

[@ayannasahota7311]

I think it would be 30,000N to the right. But I might be wrong :)!

[@nednedum4918]

The answer is 30 000 to the left because ,the value for the left is than the right.

[@coolpou9915]

thank you so much

[@chriscameronparr]

Amazing

[@s.mabbasali8790]

Thank You

[@jankipatel9012]

nice video,Sir

[@maluandpartners]

Thanks for the video. Lot of doubts are cleared by watching it. But Can someone please answer my question?
If the plane is in equilibrium what does this mean? Does this mean the plane will take more speed or no speed? Also, if the force of 30000 N is acting on the right what does this signify? Is it something F = m*a and assuming mass as 3000kg and force as 30000N, we get acceleration of 10m/sec2?
But what after getting the values? Overall where is resultant force used?

[@khadija2625]

Hi @Shubham Malu, I'm guessing that if the plane is in equilibrium, then you might want to think about Newton's first law where if the forces are balanced, the plane will either continue at the same speed it was at before, or if it was stationary (which obv it couldn't have been but still) it would remain stationary.
Also, still guessing, but if the plane has 30,000N of resultant force acting on it to the right, think of it as the 30,000N is the force that results in the plane moving to the right.
Sorry, but I don't really get acceleration myself, but hope this helps. ☺

[@khadija2625]

Thank youuuuu

[@dhanashrishorts1485]

Sir sound is not understanding
Thanks for explaining

[@glala8253]

3:07 Equilibrium* I'm paying attention

[@reubenbriggs2398]

Thanks. Very helpful. :)

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someone above mentioned it

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@3:07 he spelt equilibrium wrong

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the equilibrium spelling is incorrect

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