Tension vs Weight - A-Level Physics

scienceshorts.net
Please don't forget to leave a like if you found this helpful!
---------------------------------------
00:00 -
----------------------------------------------------------------------
I don't charge anyone to watch my videos, so please donate if you can to keep me going! bit.ly/scienceshortsdonate

[@iSteelRazorBladeGAMING]

*My physics teacher made this look a lot complicated than it actually was thanks for clearing this up.*

[@azharhaque9]

*oof*

[@dankfam6686]

That's the same with pretty much any physics teacher I think.

[@tamircohen1512]

The way I like to think about it is: If the object is accelerating in the direction of tension: T > mg so T = mg + ma If the object is accelerating in the opposite direction of tension: T < mg so T = mg - ma

[@SirKaison]

Fnet = ma. Fnet = T - mg (if upwards is taken as positve). Therefore, T - mg = ma.

[@frieda1471]

thanks so much that's actually very useful!

[@carolines2232]

I’m literally doing engineering at uni right now but still using your videos as a review, thank u!

[@doaakhalid5676]

This just helped me clear my maths mechanics concept ...thanks

[@artzerial]

Im basically here for the same thing.

[@floralynphea3400]

This channel is awesome! Deserves way more views and subs

[@ScienceShorts]

+Flora Lynphea Thanks! Get the word out ;)

[@FarmYardGaming]

Websites, school and textbooks gave no answer, this solved everything within the first minute. Thanks.

[@AllanLovezGaming]

This is one of the best explanation I have seen so far on youtube and in school. Thank you so much!

[@QuaternionPhysics1]

Much more simpler than I had imagined. Thank you so much, explained it amazingly!

[@eggxecution]

excellent! also my tip is that if acceleration is involved, I don't sum the forces to zero, I equate it to =ma which works because the 2nd law of motions states that if object accelerates, F is not = 0, instead it's =ma

[@rachelle9518]

I’m having a mechanics test tommrow to prep for my year 12 mocks this is really helping thank you I was wondering where free fall is placed or what’s it under thank you

[@kakossniper]

This was absolutely brilliant!

[@nataliaawais9065]

Its informative and simple lecture.. Thank you very much 🙂

[@chichikalililo3754]

Thanks for helping🙏

[@DopeAK7]

same way mv^2/r is a resultant for ma is also a resultant force, tension is acting opposite to the weight to T - mg = ma which can be rearranged into the equation, I find that to be easier to understand

[@vaibhavbhardwaj8895]

The concept of tension gave me a lot of tension 😂😂😅😅 But now all me doubts regarding tension are cleared thnx a lot 👍👍

[@pariwartanshrestha145]

Helped me a lot at the nick of a time.. Thanks myan

[@kenyanghoul3318]

i love this man

[@anjalityagi7406]

You made my day

[@srinuchandaka3959]

*What if a body is tied with rope on its right side and Lying on the Table. Then also tension actually acts towards the right side of the block* ?

[@matteo5399]

Great video, but I’m a bit confused with some stuff at the end. If the lift is accelerating upwards, shouldn’t the forces acting up be bigger than the forces acting down, so shouldn’t it be T+ ma = mg

[@Wild.Arr0w]

Matteo Catilo exactly

[@JBry_]

If it was equal to mg it wouldn't be accelerating

[@Wild.Arr0w]

It’s supposed to be Fnet= T-mg ma= T -mg T = ma + mg

[@ScienceShorts]

No. Remember, mg in your equation isn't weight, but rather the force needed to balance weight. All of these forces are pulling upwards.

[@memo6032]

Thanks a ton for the video but I was wondering about sth, why did we assume that the m, mass, used in calculation of the elevator weight is same as mass of the extra force to accelerate?

[@xinrui7010]

i think since the tension is kinda like pulling up the whole lift as acceleration meant that the lift is moving so the extra force needed to pull up the whole lift would naturally be the weight of the lift. I could be wrong but that's just my assumption.

[@mohk4837]

thanks a lot

[@carstenschluter3446]

big up tysm sir

[@bobsamuels7292]

Can you cover moments please?

[@marknewell2799]

+Tom Palmer Yes please

[@tajmeeradookhan3721]

this is not as complicated as i thought it was. i just needed to understand the basics to be able to work the questions and you did a great job at making me understand. thanks a lot

[@kyllel]

could you go over questions like the GCSE maths tutor does it would be more useful

[@ScienceShorts]

I've done dozens of past papers...

[@kaivanshah4304]

how to calculate upthrust

[@joashbrijit8742]

I am no longer confused during physics and math lesson :)

[@somiathar2181]

Can’t thank ye enough

[@frankielewis7143]

He ate his pillow

[@ryantbwarren]

What happens to the tension if the lift is decellerating upwards (T acts up, decelleration acts up and mg acts down). Is it just the same as the second half of the video

[@ScienceShorts]

If it's moving upwards but decelerating, that means T has to be less than mg.

[@joannaev8602]

If it is deccelerating upwards, it's accelerating downwarss, so the same as the second half if the video. 😁

[@kaivanshah4304]

tension is 6000N when speed is 2ms what is tension when acceleration is 2ms^-2

[@rudyardvaia6909]

what if its at an angle

[@ScienceShorts]

See Easy Vectors Trick video!

[@mattenmedia]

the questions that I am required to complete are much more complicated. They involve angles. A crane arm for example, supported by a cable.

[@ScienceShorts]

Then watch some of my other videos that go into that maybe?

[@mattenmedia]

@@ScienceShorts okay cool, I'll try find them. Thanks

[@rudyardvaia6909]

@@mattenmedia did u find them

[@citrous]

F=ma