Physics | Newton's Laws of Universal Gravitation | Full lesson (with examples)

This lesson covers the theory, application and graph representation of Newton's Laws of Universal Gravitation. The are two examples that will help with the understanding of how to calculate for and distance between two objects that attract each other. This is relevant for IEB and NSC/SCE exams in South Africa but it is also applicable for other international curricula (Cambridge IGCSE, O-level, etc)

[@clareiyer9429]

Hello sir, I just wanted to say thank you so much for these lessons. I had just gotten my physics exam mark back, and it was 91%, thanks to you sir🙌🙏

[@MlungisiNkosi]

Genius genius genius!!!

[@oceankwazieysa2624]

What I honestly like about you sir is that u Don't complain like our teachers ..."u learnt that in previous grades" 😫 ...u just teach everything ♥️✨

[@MlungisiNkosi]

If you ever wanted the secret behind why people gravitate towards this channel... There it is!!! Thank you 🤗.
Ill continue to do my best

[@nombusongubane5298]

These lessons are enjoyable thank you 👏🏻👏🏻👏🏻

[@calvinbafshoe2626]

I'm glad your channel is growing sir. When I started following you, you only had 4k subscribers but now your subscribers have doubled in numbers. Keep up the good work!

[@MlungisiNkosi]

Thank you so much sir. I'm amazed at the testimonies that I keep hearing about the channel. We are called to be the light of the world and I honestly sought to exhibit that.
I thank God for the growth. Thank you for being part of the family as well.

[@solvingexampapers]

Great lesson indeed! Let’s help fellow learners especially that they’re writing final exams soon, these lessons will surely benefit them. Good luck to all learners, watch these sciences lesson and you will pass with flying colors.

[@MlungisiNkosi]

Thank you

[@JabulileNalediLetshabo]

Thank you for this lesson You made this easy to understand.

[@sulawest]

This channel is legacy
Keep up the good work sir

[@unathimajiki592]

You make physics so easy i give you 10/10 sir thank you

[@MlungisiNkosi]

You’re welcome… Please get 10/10 as well and come back to tell us once you’re done.

[@NondumisoMainganye]

Thank you sir we will make you proud❤👌

[@Zoovies]

One of the amazing channel i have ever found thanks sir

[@MolebogengMakgabo]

used to hate this part of newton,s law but with your help sir i understand it now.

[@MlungisiNkosi]

lovely!!!

[@kagisochuene7118]

Your channel is so helpful ,please do electromagnetism more especially the right hand rule and faraday's law

[@MlungisiNkosi]

Please check on the list... It is there already.

[@tinotendagladysmakusha5055]

this is really helpful , a day before exams imagine !❤️❤️

[@MlungisiNkosi]

Wow!!! Please call all your friends to gather here

[@DanielKiprop-xk4sp]

You are doing a great work Mr. continue with the indomitable psyche....✌🤞

[@MlungisiNkosi]

Thank you, I will…

[@fumanisambo5186]

Thank you for taking us through this step by step.

[@MlungisiNkosi]

You are so welcome!

[@GiwaChristianah-sj2ys]

I love you explanation 😘

[@donsmars]

I was patiently waiting for this one❤🤝🏼

[@MlungisiNkosi]

You're welcome... 😊

[@Thandomm]

I'm new here and I'm learning so much 🙏🥺thank you sir

[@MlungisiNkosi]

Welcome 🤗. Are you upgrading?

[@mbalenhlesanelisiwe4300]

You such a lifesaver 🙏❤️

[@shiann5089]

Appreciate this Sir! Awesome video and very helpful

[@shiann5089]

God bless❤️

[@MlungisiNkosi]

Thank you

[@Spyce_mthola]

Lets give this man some juice ❤🎉🔥

[@MapasekaMolebatsi]

Thank you sir for teaching us to understand ❤️😊

[@MlungisiNkosi]

It's my pleasure

[@honeybliss45]

Cannot thank you enough. Thank you so much for this lesson, sir

[@MlungisiNkosi]

It is my sincere pleasure to assist

[@nhlakaaa7048]

Dope dope video. I couldn't stop smirking at thebfact that your voice sounds like Tom from the Boondocks

[@MlungisiNkosi]

🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
I have to hear him

[@uzochukwujoshua-t2e]

thanks you sir ,i enjoy this

[@MlungisiNkosi]

You are welcome

[@tacochan8015]

For the second part of the problem at time 26:13 I got a different answer and I typed it in the exact same way. I got 683.79 N how did you get 571.44 N?

[@Aishwarya_0310]

I got the same.. I think sir miscalculated there.

[@ayeshabibisulaiman9915]

Thank you sir.
I was waiting for this one.

[@MlungisiNkosi]

Yippie!!! How come you never told me? Please feel free to make suggestions in future...

[@makanakamangwanda8801]

Congrats on 100k👏

[@MlungisiNkosi]

Thank you so much 😀

[@lethubesalome3067]

That you so much sir i have been struggling with this law but now i get it

[@MlungisiNkosi]

You’re welcome ☺️

[@andilebuthelezi7508]

Nice one sir..keep it up

[@MlungisiNkosi]

Thank you. I will

[@uyathandwamkoko5549]

This helped me so much thank you sir 💯and i think we think alike😁❤

[@thephilosophyofhorror]

Very good video. Thanks :)

[@nyasha0533]

I'm learning thank you

[@MlungisiNkosi]

You’re most welcome… Takes a bow 🙇

[@twistbubbles815]

Sir thank you so much 😪you really saved me 😪

[@MlungisiNkosi]

My pleasure

[@unarinetshikhudo-ei2vy]

Thank you Sir you helped me a lot

[@MlungisiNkosi]

You are most welcome

[@allimotha3566]

May the lord bless you Sir❤️

[@miriamjacks7079]

It was really educating

[@MlungisiNkosi]

I wouldn’t have it any other way

[@leratolaka2740]

When I calculated question 1.2 I got 683.79N not 571.44N

[@MlungisiNkosi]

I'll check if there is an error... It happens to the best of us. Thank you for understanding

[@michaelaroux9032]

I double triple checked.... I also got 683.79N

[@mihlasthembele9469]

I also got 6.859361641×10^-6 but ill also re check 👏👏

[@ashenreaper1668]

i am also getting the same answer. 683,79N

[@rainylizardseyes7904]

Same

[@iheanachochibuzorbright4179]

Sir please must the G value always be used in all the calculations .

[@ngeni_za]

Finally!!!

[@MlungisiNkosi]

This train is slow but it eventually gets there 😊

[@tiyanimanzini8025]

For the third question...pls explain how u got 6.97 because getting a different answer even when I square the answer

[@akhonaakhona7445]

Thank you mr♥️

[@MlungisiNkosi]

You’re most welcome

[@chitundujames5479]

Nice lesson sir

[@MlungisiNkosi]

You’re welcome

[@siphesihlebuthelezi9184]

Good morning Sir Nkosi, I would like to know, if the distance below the surface what do you have to do, is it then we subtract

[@thendomakasela6767]

THANK YOU

[@MlungisiNkosi]

You are most welcome

[@ashenreaper1668]

hey sir, the answer i get is 683,79N. i have checked more than ten times but its giving me the same answer. Please assist me on that query.

[@MlungisiNkosi]

Will do

[@tshegofatsomangaba]

Am I correct to assume that for the ieb students out answers are different because the value of G on our formula sheet is 6.7… not 6.67…😅

[@philaphuza47]

Meener the answer at 1.2 for the first problem question seems to be wrong i checked like 5 times and i remembered the question looked familiar from the Answer Series I checked there and my answer kwi calculator matched their answer
.....Also for the second problem i attained 59 0000m as my answer ..i dont know if it's wrong cause Meneer's answer was different from mine

[@MlungisiNkosi]

Sometime I do make mistakes in my calculations. Thank you for pointing it out. The main thing is that you understand the concept and the process...

[@phuti3031]

Good Afternoon Sir can I please ask a question..if you dont mind .....
When someone is on the ground then they go up a mountain 6000m do we take that 60000m and add it to the radius of the earth ... If so why do we do that because they are practically still on earth

[@MlungisiNkosi]

Yes you do,,, I’ve covered that question in one of the past papers

[@phuti3031]

@@MlungisiNkosi Thank you Sir

[@carolinenomahlubi5885]

thank you so much sir for this video.sir can you also a video on newtons second law on horizontal surface

[@MlungisiNkosi]

Already posted... I have an entire series on Newton's laws

[@carolinenomahlubi5885]

ok sir thanks i will check it.

[@holiginz823]

Thnks sir

[@MlungisiNkosi]

You’re welcome

[@holiginz823]

@@MlungisiNkosi ok sir

[@holiginz823]

@@MlungisiNkosi sir do u HV some topics ov x-ray spectrum, nuclear physics u taught online I looked for them bt all was in vane

[@tanyamv]

Sir my answers don't come out like yours in the calculator what mode are you on?
For instance my Distance came out as 69....yours was 6.9

[@MlungisiNkosi]

I think the most important thing is that you understand the concept and less about the final answer. Nonetheless either one of us could have made an error. If it's was me, receive my sincere apologies

[@oceankwazieysa2624]

And sir please can you make a video of Newtowns law of universal gravitation where we want the weight of an object on other planets with different values of gravitational acceleration

[@MlungisiNkosi]

Great suggestion... I'll definitely look into it.

[@sydwellrangile4495]

Hello sir again ❤👍 sir I just wanted to ask if could u kindly plzz send a link if u could of the papers u use in the channel I have noticed that most of these are ieb challenges and my teacher always tell us that we should hunt for those bc they are good, so how can I download one bc Google is giving so much trouble with the ads .

[@MlungisiNkosi]

I’ll upload them on my website

[@karabojema8595]

dear sir when trying to calculate the distance above the earth's surface on the example 2. I got a different answer which was 59000 instead of the 594and something

[@MlungisiNkosi]

That’s fine

[@yolanda7560]

How do I setup mode on my calculator to do universal gravitation calculations correctly

[@MlungisiNkosi]

You don’t need to set up anything… Just make sure you use “EXP” button next to the “ANS” button to save time

[@modousallah7998]

Can we have videos on circular motion and SHM ??? Please sir 😢

[@MlungisiNkosi]

I will provide them

[@uzzigaming5135]

Good day sir. By the graphs, does all gradients of the graph represent G?

[@MlungisiNkosi]

No… it depends what you have on the x- and y- axis

[@LeaderTC]

im in grade 6 and this was shown to us bro

[@MlungisiNkosi]

in grade 6 bro?

[@LeaderTC]

@@MlungisiNkosi yeah

[@AliRaza-th9wh]

G sir g

[@mapitsamaja8728]

🙏❤

[@MlungisiNkosi]

You're most welcome 🙂

[@sweetmadam]

POV: your English is top tier

[@MlungisiNkosi]

Thank you so much 😊

[@daniels-BM]

As for "my drawing skills need some prayers"😂
Im an artist let's swap.😭😭

[@khayntamo]

thank you sir 🤌🏽

[@MlungisiNkosi]

You're most welcome...

[@khutsokhutso-xe9ny]

Can you please show Me how you got 6.97×10⁶m on the Satellite question

[@PRSEIMELA]

I believe there's something wrong with my calculator😭😭😭😭

[@ivarnwilson]

Sir I am very hurt about your Satellite drawing😂😂😂😂😂

[@MlungisiNkosi]

😂😂😂😂😂😂😂😂😂😂

[@michaelaroux9032]

You punched in 6.89x10^6 instead of 6.38x10^6...i spend like a full 10 min trying to figure out what you did there😂

[@MlungisiNkosi]

I'm sooo sorry 😢😰🤭🤗

[@AmendaBlose]

But the earth radius it 6,38×10⁶

[@tiyanimanzini8025]

I dont understand the graphs

[@thatonyakale375]

i got 683.79 for 1.2 not 571.44

[@MlungisiNkosi]

Great 😊

[@thatonyakale375]

No offence but please always have a calculator by your side cause for the d - Re i get 5.90 *10^5

[@MlungisiNkosi]

I always have a calculator… But in the nature of the business, mistakes happen… As I would imagine you make them as well, right?

[@johnbell1072]

King Nkosi

[@MlungisiNkosi]

Thank you 😊

[@casketpaint397]

Hi Sir , for the aeroplane question, how did you get 571.44 ? I got 683.790939

[@GaslightGatekeepGirlboss372]

thank you so much ive been STUCK STUCK HERE for like 20 minutes, i think he made a mistake on his calculator

[@giftsarah-k2c]

Yeah same here with me