Grade 12 Physical Science: Newton's Laws 2- Pulleys

[@TariroGwenjere-pe2hf]

i am in grade 12 now i did not know how to tackle this type of question but now i owe you a distinction, it's never too late

[@justicentokozo9848]

Thank you Mr Nkosi you really a Blessing at this time ,please keep the lessons coming you helping change my Pespective in everything ,I am really great full sir

[@MlungisiNkosi]

I am also grateful that you can receive the help you so require... Keep moving forward

[@winniemahlangu8860]

Thank you sir it's been productive .

[@maryzulu1787]

You r so passionate nd patient Some teachers teach at the speed of light.You hardly can't understand anything.You lessons r very helpful and understanble Sending love Thank you very much

[@sabelomhlali5087]

This is just amazing. I used to hate physics because I didn't understand it fully. I'm thankful to have come across this channel. God bless you in abundance, sir

[@MlungisiNkosi]

Welcome to the family... 😊🤗

[@sweetmadam]

I have mastered electric circuits & electrostatics,all because of you!

[@MlungisiNkosi]

My pleasure 😇

[@NomveloDlamini-b6v]

Mr nkosii you are a star 😊 Uwusizo kakhulu kumina since I struggle a lot when dealing with newton's. 😊

[@thobilemasoka6655]

You always have a way of making me understand Physix shem, thank you so much Mlu 😭🙏❤️❤️❤️

[@MlungisiNkosi]

Thank you so much Thobile 🤗

[@carynwilliams3101]

Helps more than any physics teachers I had

[@MlungisiNkosi]

My pleasure 😇

[@asipheasanda2207]

Have you written your exam?

[@carynwilliams3101]

@@asipheasanda2207 no only in November

[@mukilejosehina4812]

Sad truth...he's mastering it

[@thando_tlng]

Wow did not know anything about newton writing p1 on Friday and I am going to be ready to kick ass (thank you sir )really enjoyed watching 😭❤

[@thabileandile9509]

same😂😂😂😂😭

[@MlungisiNkosi]

All of God’s best to you guys

[@PalesaPreciousMashego]

Not me mastering this section right now

[@GibsonMogale]

Wow this vids are very helpful I must say .......Never liked physics but now I think am developing the love for it 🤗🤗🤗....you just gained a subscriber maneer 👌👌

[@MlungisiNkosi]

Oh wow, welcome to the family 🥳 You have loads of content to work through. Get a packet of chips and start binging 😊

[@GibsonMogale]

@@MlungisiNkosi already got them😆😆😆 Am investing in this channel shem🤞🤞hope to get better results

[@MlungisiNkosi]

@@GibsonMogale you definitely will

[@hlobilegininda2686]

Im a student teacher, this is so easy to understand. you re the best

[@MlungisiNkosi]

You’re welcome my dear colleague. May your learners benefit from your knowledge

[@moneuamber5948]

Well I guess Physics isn't that bad after all . Thanks a lot sir , your video's are highly appreciated

[@MlungisiNkosi]

You’re most welcome

[@Neo-wz8wi]

I am starting to love physics, your videos are very helpful. Thank you

[@MlungisiNkosi]

I'm sooooo glad to hear that 😀

[@TaongaChirwa-tq1sy]

Saving me seven days before my physics exam

[@thandiM_]

you sir !!!! You’ll always be famous 😭😭😭🙏🏾

[@MlungisiNkosi]

Thank you…

[@philaphuza47]

I'm watching these videos chasing my dreams and preparing for my supp exam in May . I'm feeling positive and umsebenzi uya ngena tisthala ...and siyaku bonga

[@MlungisiNkosi]

Kubonga mina... Let's make this great work trend. Utshele nabanye. Please don't forget to subscribe 😊

[@philaphuza47]

@@MlungisiNkosi i already did just that yesterday. I wanna plug all future matrics with this channel...cause this is like hidden gold

[@teressamanzini]

Hi and thank you❤. If I amy ask why is the normal force and fg for mass M smaller than the horizontal forces🤔? Why is N, Fk, Fg smaller than T in the 5kg block☹️?

[@sheniceramiah8733]

may you please make a video on electric circuits

[@MlungisiNkosi]

That is coming in the not-too-distant future

[@whatthenovelist]

The 12kg and 8kg one we did yesterday and I was shook but happy when I found the answer to be the same, this works better for me than my teachers method

[@mugwabanacaroline3727]

Was in a test or a class work????

[@MlungisiNkosi]

I’m grateful to hear that

[@whatthenovelist]

@@mugwabanacaroline3727 Class

[@jaquolinemashego3075]

For 5.1.3 the friction on the free body diagram shouldn't it be fs since it's static friction instead of it being fk

[@jaquolinemashego3075]

45:07

[@advise_langa]

Sir I’m still struggling a bit on newtons 😢😢an inclined and pulley all in one I can’t get it right

[@nelisaashtonmagenu293]

dawg me too I'm so stressed 😭😭😭

[@thando_tlng]

All the best for all your Finals❤❤ just because we share the same surname " Sothole "

[@Kgadir]

We also need maths lessons, you too great 👏

[@MlungisiNkosi]

Thank you... Maths lessons coming up in the future.

[@Vivianschannel234]

Hi sir.May i ask what year exam past paper is this, and which month

[@wesleydlamini267]

I needed that revision, thank you very much🙏

[@MlungisiNkosi]

I'm glad it could help

[@buhlebafunanimasango7923]

The approach have been using was wrong that's why I've been getting wrong answers thank you Nkosi

[@reshanasingh956]

Hi sir really like yr channel, pls if u can, our school is going through a lot an it's sillibus is terrible especially in physics the highest was 50%. What I'm asking for is if u could teach the grade 11 syllabus

[@MlungisiNkosi]

Hi sir… I will definitely do so. Thank you so much 😊

[@magombanande2439]

Hello sir and thanks a lot for this informative video. On the last question, they want acceleration right. Couldn't we have just substituteed our tension that we already got minus kinetic friction =5×a then we divide by 5 both sides instead of having these two equations

[@MlungisiNkosi]

That works

[@theekhaex1802]

Mr Nkosi. The past paper question you did, why is it kinetic friction and not static friction?

[@itztanatswa5237]

more of the same. Fs and Fk will always be equal to μk.N Hopefully that makes sense

[@MlungisiNkosi]

So static friction is when you have a stationery object and kinetic friction is for moving. Both are calculated in the same way but the coefficients would be different.

[@HappyMaposa-professor]

Now what of questions where inclined planes are applied

[@olzaii278]

Thank you Mr Nkosi this video was very helpful

[@MlungisiNkosi]

You're welcome

[@miramanguengue4781]

Thank you o much Mr Mlungisi you made newtons law questions so easy🎉

[@DoctorTholaphi]

Do we choose the direction depending on where the object is going??? ❤

[@ZintleHoshe-tl7om]

it is not necessary to choose the same direction as the object, but it is advisable to do so just to avoid any mistakes and any confusion

[@mohlophenim]

sir for 5.1.3, it gave us the coefficient for static friction and not kinetic friction. wont fnet be equal to 0 if we're using static friction

[@MlungisiNkosi]

Please give the time stamp for this

[@mohlophenim]

@@MlungisiNkosi from 45:00

[@LiqhaweMdoda]

your sessions are really helpful sir we thank you very much, i am liqhawe mdoda at lawhill maritime centre i thank you

[@kgagudimalomane2997]

Thanks.. mlu 🤝 ur doing a gr8 job to us hu ddnt have clear understanding in da class room.

[@MlungisiNkosi]

You are most welcome. Thank you

[@KelebogileJaydelenKekana]

Why Was The Tension We Got In 5.1.2 Disregarded For Calculating The Acceleration In 5.1.3¿?

[@scebisombali2718]

Sir in Newtons Laws what if am asked to calculate the magnitude of an angle???

[@scebisombali2718]

I just came across a question like that and am a bit stuck😶

[@MlungisiNkosi]

Hello Scebiso. How may I help you?

[@thandazoselz]

i also came across that problem on a sept 2020 question paper

[@mikhajacobs2144]

how do you calculate angles that will keep the system at constant velocity

[@MlungisiNkosi]

We'll have to make a video for that

[@thandazoselz]

please consider this sir

[@tshegotshegofatso5707]

Sir after calculating tension is it possible to get your final answer as nagative tension

[@MlungisiNkosi]

If done correctly, what you should get is the magnitude of the tension (which is positive) because you've already compensated for direction in the initial step

[@tshegotshegofatso5707]

@@MlungisiNkosi so if it's nagative it's wrong

[@sabelomhlali5087]

Mr Nkosi, do you also teach Mathematics perhaps ?

[@MlungisiNkosi]

Yes I do. Please send me an email if you would like to be part of my online classes. Send email to [e-mail] or [e-mail]

[@carynwilliams3101]

Best teacher ever

[@MlungisiNkosi]

Thanks a million 😊

[@AlakhiweAkhile]

Mara sir how can 8kg going down while it has small number it shouldn't 8kg go up as it is being pulled by 12kg um confused

[@ljtigris]

You can choose any direction you want, unless they tell you which direction the blocks move.

[@Lameezy9]

it only accelerates down when the mass of the 12kg block changed to 5kg. Makes sense because 8kg>5kg

[@professorngomane3140]

Since I've started following u sir🙏my marks on Physics have increased 💓... since On 12 November we're writing p1, may u please make video on 2-hanging object having tension in between but pulled upward at a certain force...

[@professorngomane3140]

Eg. Like Aeroplane pulling two objects with certain tension in between. And last tension between object first object and the aeroplane. Given the force of the aeroplane (air resistance is ignored)... Please 😭🙏🙏🙏🙏

[@MlungisiNkosi]

I'm happy to hear about your improvements. I think I have a clue what you're referring to... Please check under Newton's laws if I didn't do that question. I believe I covered it

[@professorngomane3140]

@@MlungisiNkosi Yah I got it💓 thanks 😊🙏

[@MlungisiNkosi]

@@professorngomane3140 you're welcome

[@mbalimadonsela5161]

@@MlungisiNkosi Hi can I please have your email

[@deadmanwalking912]

thanks for the nice lesson❤🙏🏆

[@Mbaliyenkosi_Dikgale]

Sir when do we include weight in our calculations?Do we include it when we are given objects that are on the surface and slopes only or does it also work with pulleys?

[@siphesihlenduna1012]

It works with pulleys too

[@MlungisiNkosi]

When you’ve got objects moving vertically

[@manassetshimanga2052]

Wow thank you this videos really helped But wat past paper did u get this question in ....plzz

[@MlungisiNkosi]

You’re welcome. I’ll check and revert to you

[@Tsidiso01]

Thanks for having my back❤

[@MlungisiNkosi]

You’re welcome ☺️

[@freddieliveson5703]

Shem wena sir, o deserva coldrink. Eseng ya Kingsley. Original straight

[@MlungisiNkosi]

Hahaha!!! E tlise

[@sweetmadam]

😭🤣

[@nkhavisosuccess3191]

Tnx sir... Am trying to prepare and upgrade for my grd12 and this is Vey very useful.

[@MlungisiNkosi]

You are most welcome. All the best for your exams. You may get in touch with me if you need extra assistance.

[@siyabongamthembu9361]

Dankie Mnr. I really needed the revision

[@MlungisiNkosi]

You’re welcome

[@Tapelotapelo]

U help a lot sir. Thanks... God bless you ❤

[@nyasha0533]

These videos are very helpful thank you

[@MlungisiNkosi]

You’re welcome

[@hloniphandlovu1229]

You're amazing ❤❤❤

[@MINISTER_SHERIPH]

Wow I'm enjoying every moment sir

[@MlungisiNkosi]

It’s great to hear that about learning

[@sakeenahajayi9328]

Sir thank you very much sir for this video. It really helped!

[@MlungisiNkosi]

You're welcome 😊

[@lusandamthethwa5006]

God bless you for this😭❤

[@MlungisiNkosi]

You're most welcome 😊

[@tallbarbiegirl]

Thank you Malume 🙏🏽

[@PalesaPreciousMashego]

💐💐💐💐here are your flowers Sirrr!!!!

[@MlungisiNkosi]

Many many thanks 🤩

[@lehwailaraymond1372]

how do we know if our Tension should be positive or Negative, Because you sometimes say "it is going down, therefore, is Positive" while on other questions you say "It is going down then it will take negative"

[@MlungisiNkosi]

Please watch the video before this one. So it all depends on your choice of direction. Rule of thumb says you take direction of motion as your positive.

[@lehwailaraymond1372]

@@MlungisiNkosi I did Thank you

[@alizwamichelle6438]

Thank You So Much Mr Nkosi💜 You Have Made Physical Science A Lot More Interesting Subject Thank You Very Much Sir. Sir Can You please Perhaps Add Mee To Your Mathematics Online Classes Please

[@MlungisiNkosi]

Thank you so much Alizwa. Please send me an email: [e-mail]

[@nangosiyephu339]

Thank you, when do you add or subtract forces?

[@MlungisiNkosi]

Remember forces are vector quantities. Vector quantities have magnitude and direction. Suppose we choose a particular direction (say downwards) to be positive, it will mean every force that is downwards will be positive and every force pushing or pulling upwards will be negative. By definition Fnet or Fres is the vector SUM of force. Therefore, we will add forces and take direction into consideration. I hope that's clear

[@nangosiyephu339]

@@MlungisiNkosi now I understand 🙏thank you sir

[@MlungisiNkosi]

@@nangosiyephu339 danko 😉

[@rodwavecontent3909]

You the best sir!!!!!!!🏆🏆🏆

[@MlungisiNkosi]

Thank you 🙂

[@ZiziphoMagaqa]

Thank you so much Mr Nkosi. I wanted to ask sir on the last question why did we substitution the coefficient of Friction as 0.15 and not multiply the 0.15 first by normal force to get frictional force

[@jeanne.wanyama]

This helped so much, thank you!!

[@MlungisiNkosi]

You're most welcome

[@Kgadir]

Are you only covering physics and not chemistry?

[@MlungisiNkosi]

I'm starting Chemistry in the next few weeks.

[@Lilcandydrooly-pd3ek]

Am glad I am learning for my exam

[@NomveloDlamini-b6v]

May God bless you 😊❤

[@melissaackerman5854]

Good day Sir😇 Please may you make a video on electrolytic cells🙏🏿

[@MlungisiNkosi]

I will cover that eventually... 😊

[@brianlihle1096]

Hey sir the sub topics are honestly disturbing because we can't see at the end

[@MlungisiNkosi]

You can switch them off from your end…

[@katlegokope4010]

U have to come and teach us this side🙌🏽👊

[@sdumoledubey5808]

Good work

[@MlungisiNkosi]

Thanks

[@dulminipinipa1175]

Again thank u very much sir.

[@MlungisiNkosi]

It is my absolute pleasure. You are most welcome

[@maokotokulogo866]

U r a blessing

[@MlungisiNkosi]

Thank you

[@tommystyling1252]

Awesome 👍👍

[@oritondanemalale4674]

i actually get sad when the video ends 🤣

[@MlungisiNkosi]

Wow… who would’ve thought someone might love Science that much 😃

[@AlakhiweAkhile]

Oh maybe 12kg doesn't have applied forc

[@ThobakgaleT]

nah is too huge to be pulled by the 2.5 thats why they changed it

[@ChefHot]

Thank you👏

[@MlungisiNkosi]

You are welcome

[@philaphuza47]

Baie baie dankie meneer

[@MlungisiNkosi]

Jy is baie welkom 😊

[@Thandomm]

Wow, thank you so much

[@MlungisiNkosi]

You’re most welcome

[@fikilekmalinga]

Please help me more sir I m writing Monday

[@RifqahDavids]

Thank you sir

[@nonhlahlahappiness515]

Thank you so much

[@MlungisiNkosi]

You’re welcome

[@IviweKango]

❤❤

[@MlungisiNkosi]

🫠

[@gugulethungwenya1786]

Thanks 😊

[@SbahleDladla-oc1dz]

⭐️⭐️⭐️⭐️⭐️

[@johnbell1072]

King nkosi

[@MlungisiNkosi]

Thank you 🙏🏾

[@Ah-nf2vs]

Nkosi king