Energy, Work & Power (19 of 31) Conservation of Mechanical Energy, An Explanation

Рет қаралды 95,171

10 жыл бұрын

In this video Mr. Swarthout explains total mechanical energy and how you can use it in together with conservation of energy to solve problems in physics.
In the example shown in this video, work is done on the object to raise the object to a specific height. At its greatest height, before it is released, it is at rest and has no kinetic energy but has its greatest amount of potential energy. When it is allowed to fall back down the objects potential energy is converted to kinetic energy. Just before it reaches the bottom the object will have reached its greatest velocity. All of its potential energy has been converted to kinetic energy. Therefore, it will have no potential energy but it will have its greatest kinetic energy.
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Пікірлер: 141

@amadoujallow949 7 жыл бұрын

better than what my physics professor explains for 3 hours. Thank You.

@user-dr8tz6zo9c 6 жыл бұрын

Amadou Jallow Professor?This was taught in the university?Why we were taught this in senior high by our physical teacher?

@5hredder 6 жыл бұрын

because most degree plans do not require calculus based physics... and the non-calculus based physics you learn in highschool is fundamentally the same, with the curriculum varying marginally depending on which school teaches it. you can only go so far with the learning material when the subject is basically a math application course and the advanced math is excluded.

@olamorad8875 6 жыл бұрын

exactly

@Vicculuz 5 жыл бұрын

I knew this obligatory stupid comment would be top 3 on a video like this.

@aliahmedalyammahi2492 4 жыл бұрын

We are actually learning this at 9th grade lol

@jim-anant 7 жыл бұрын

Wow better than I explained to my students. Quality content like yours is always appreciated Sir!

@stepbystepscience 7 жыл бұрын

That is very nice of you to say!

@hassanulger7167 7 жыл бұрын

The way you explained it was legendary!

@mahnoordurrani1092 8 жыл бұрын

Thank you so much all my concepts on the conservation of mechanical energy have been cleared

@stepbystepscience 8 жыл бұрын

+Mahnoor Durrani That is great and thanks for letting me know. You can see a listing of all my videos at my website, www.stepbystepscience.com

@Amberischewyy 6 жыл бұрын

So grateful! Makes me realize physics isn't as difficult as I imagined.

@stepbystepscience 6 жыл бұрын

Yes, just try to break it down into smaller steps.

@tekknin9 6 жыл бұрын

This was awesome, thank you!

@ilaiyengar9974 7 жыл бұрын

This vid just saved my physics grade

@stepbystepscience 7 жыл бұрын

Awesome, You can see a listing of all my videos at my website, www.stepbystepscience.com

@edwinanthony3069 7 жыл бұрын

wow, you make everything simpler than how my teacher explains. I love your channel it helps me get through physics. thank you for existing

@stepbystepscience 7 жыл бұрын

Thank you very much for the great comment. You can see a listing of all my videos at www.stepbystepscience.com

@riyadbushnaq1537 8 жыл бұрын

Thank you so much :) , you really made it clear for viewers. Great job

@stepbystepscience 8 жыл бұрын

+Riyad Bushnaq Thanks, I try to go Step-By-Step, in fact….. You can see a listing of all my videos at my website,www.stepbystepscience.com

@Mrbonehunter57 7 жыл бұрын

this is a lot of help for me thank you so much

@daniloorbolato 7 жыл бұрын

Your videos are awesome. very helpful. Exam in a week. Wish me luck! 😀

@stepbystepscience 7 жыл бұрын

Thanks for the comment, hope the exam goes well!

@sophiebosio8171 7 жыл бұрын

Thanks a lot for this! :))

@ealhejaily 6 жыл бұрын

Thank you very much for those great videos. I would suggest though that you put this work/energy videos in a series like other videos by you. Example: simple machines (1/7 video series) motions videos (1/21 video series), etc... great work though!

@stepbystepscience 6 жыл бұрын

Thanks for taking the time to comment. I do have this playlist for those topics, also you can also see a listing of all my videos by topic at www.stepbystepscience.com

@fatimaalhawaj9096 7 жыл бұрын

This video saved my grades thank you so much

@veronicaalba8869 9 жыл бұрын

Really helpful video!! THANK YOU!

@stepbystepscience 9 жыл бұрын

Veronica Alba you are very welcome.

@PhoenixQueen316 7 жыл бұрын

Thanks. I have a test tomorrow, and I needed this.

@stepbystepscience 7 жыл бұрын

Hope the test goes well. You can see a listing of all my vidoes at www.stepbystepscience.com

@QpointXDz 7 жыл бұрын

Extremely helpful. Thanks!

@stepbystepscience 7 жыл бұрын

Great and thanks for commenting. You can see a listing of all my videos at my website, www.stepbystepscience.com

@biglennyish 8 жыл бұрын

Great video. Very clear and easy to follow! thank you

@stepbystepscience 8 жыл бұрын

thank you for the comment, the first goal of my videos is to be clear, concise and get right to the point.

@j06_ae 6 жыл бұрын

thank you so much!

@nejateshetu7082 8 жыл бұрын

Wow! Just thank you sooo much!! it is helpful

@stepbystepscience 8 жыл бұрын

+Nejat Eshetu You are very welcome, You can see a listing of all my videos from my website at, www.stepbystepscience.com

@angelakate9922 3 жыл бұрын

My physics professor give this reference to us and I'm happy i am able to understand this

@stepbystepscience 3 жыл бұрын

Glad it was helpful for you. Thanks for watching!

@luwaarosina8511 5 жыл бұрын

Thanks very much, it was very helpfull and think you deserve more thumbs ….we are patiently waiting for more and well explained as well.

@stepbystepscience 5 жыл бұрын

Very nice of you to say, thanks!

@lensaali2093 9 жыл бұрын

Great explanation! Thank you!!

@stepbystepscience 9 жыл бұрын

Lensa Ali Thank you very much for the comment.

@altejahashimi637 7 жыл бұрын

Thank you so much, your videos helped me alot, :)

@layanas4094 9 жыл бұрын

your lessons are really helping me in my studies thank you

@KAINOA104 5 жыл бұрын

helped a lot, thank you

@ItsScarllet 3 жыл бұрын

very helpful! thank you!

@stepbystepscience 3 жыл бұрын

Glad it was helpful! You're welcome.

@catalinabenavides4064 7 жыл бұрын

what happens when there are springs involved?

@aesthetic35784 5 жыл бұрын

Thanks it is concept building lecture

@Celtichunter7 8 жыл бұрын

Thanks, I had to hear there may not be friction in the system. Thx alot :D

@kawaeeee 6 жыл бұрын

little confuse.... If Ui at rest, U=mg*change of y, the y should be zero? because there have nothing change in height. and when it fall, the y should be -5?

@wahidahrazali5502 8 жыл бұрын

Thanks a lot Sir Brian. It was very helpful. Please make a video about momentum. Thank u :)

@stepbystepscience 8 жыл бұрын

You are very welcome....momentum....If I only had the time...currently work on some video for AC circuits. You can see a listing of all my videos at my website, www.stepbystepscience.com

@mkayzondy 7 жыл бұрын

thank you

@highqualityvisuals3774 8 жыл бұрын

Thank you very helpful

@abhishekgedela9135 4 жыл бұрын

awsome way of explaination

@stepbystepscience 4 жыл бұрын

Thank you for the awesome comment

@DapaChrons 5 жыл бұрын

thanks Vince Vaughn!

@stepbystepscience 5 жыл бұрын

You are very welcome and thanks for commenting.

@thomasnimineh9048 5 жыл бұрын

Good looking out mister

@stepbystepscience 5 жыл бұрын

Thanks!

@japjeetsuden4252 7 жыл бұрын

hi, could I ask something, which you might not be able to do because of time, and I totally get that. Is there any way you could add captions on these? Because I have some hearings issues and some of the stuff you're saying gets oddly translated in the auto-generated English subtitles. Cheers!

@stepbystepscience 7 жыл бұрын

OK I turned on the captions for this video, you have to click on the CC button, bottom right. I did not edit them to make sure they exactly match what I am saying. Check it out and let me know if it helps. I can turn them on for others if you would like me to.

@japjeetsuden4252 7 жыл бұрын

Nice! helps a bit. if you could the captions on the other would be awesome because i would hate to bother you over and over again every time i needed to see another video.

@anonymousanonymous6092 5 жыл бұрын

How do you know "y" equals 10?

@kgosigadimokgethi8998 3 жыл бұрын

So what if there is an applied force and no friction

@Mouse-qm8wn 3 жыл бұрын

Thanks a lot for the great videos😊🇩🇰

@stepbystepscience 3 жыл бұрын

My pleasure, glad you like them!

@tamanaradmanish5297 2 жыл бұрын

👍👍👍👍🙏🙏🙏🙏🙏 keep up !! You are the best!!!

@stepbystepscience 2 жыл бұрын

Thank you so much! Will do!

@queenethmogale5433 6 жыл бұрын

Thank you so much ❤❤

@stepbystepscience 6 жыл бұрын

You are very welcome

@vee9477 6 жыл бұрын

thank u!

@samsonkabasa5041 7 жыл бұрын

sir does that force has to have constant accelation , for U=mgh?... please help

@stepbystepscience 7 жыл бұрын

I am not sure I understand your question but I wuld say no. You can see a listing of all my videos at www.stepbystepscience.com

@seemaebby1 6 жыл бұрын

Nice

@oscarduran5931 6 жыл бұрын

Where does the energy go when it hits the ground and stops moving

@stepbystepscience 6 жыл бұрын

converts into sound, heat, changing the shape of the object, etc.

@ziarazonable8124 3 жыл бұрын

Thanks im only in 8th grade . This is our lesson . And i got it .. thank you very much❤

@stepbystepscience 3 жыл бұрын

You are very welcome, I hope you have fun in 8th grade.

@ziarazonable8124 3 жыл бұрын

@@stepbystepscience thank you . You helped me

@xploit8838 4 жыл бұрын

great video

@stepbystepscience 4 жыл бұрын

Thank you.

@edgarmoreno6967 6 жыл бұрын

Better than my physics’s teacher

@stepbystepscience 6 жыл бұрын

Thanks....I think?

@MJ177brrr Жыл бұрын

I did an exam question of my board In order to find distance traveled They have used kinetic energy = gravitational potential energy + work done Is this wrong

@stepbystepscience Жыл бұрын

This is correct.

@MJ177brrr Жыл бұрын

@@stepbystepscience thank you 😄

@amberamir737 2 жыл бұрын

excellent

@stepbystepscience 2 жыл бұрын

Many thanks!

@himanshu__370 7 жыл бұрын

good keep it up

@stepbystepscience 7 жыл бұрын

Great, thanks for the comment. You can see a listing of all my videos at my website, www.stepbystepscience.com

@salmedinaalic1704 8 жыл бұрын

Thanks !

@stepbystepscience 8 жыл бұрын

+Salmedina Alic You are very welcome, thanks for commenting!

@ayingguarinvlog7278 3 жыл бұрын

Thanks prof

@stepbystepscience 3 жыл бұрын

Happy to help!

@drakegomez1496 6 жыл бұрын

were do u get 500j?

@stepbystepscience 6 жыл бұрын

PE = mgh. 10 x 10 x 5 = 500

@nicolevolek8018 7 жыл бұрын

well that sure made sense!!!!

@stepbystepscience 7 жыл бұрын

Awesome...You can see a listing of all my videos at my website, www.stepbystepscience.com

@jimmy87980 7 жыл бұрын

Positive comment.

@stepbystepscience 7 жыл бұрын

Actually I think I said a "nice positive comment"...but thank you all the same. Very nice of you. You can see a listing of all my videos at my website, www.stepbystepscience.com

@olamorad8875 6 жыл бұрын

thank you so much i wish that i can do better in exam

@stepbystepscience 6 жыл бұрын

I hope the exam goes well! Thanks for the comment!

@olamorad8875 6 жыл бұрын

wellcome

@matthewfairfax9950 7 жыл бұрын

thanks

@stepbystepscience 7 жыл бұрын

You are very welcome and you can see a listing of all my videos at www.stepbystepscience.com

@angelasamonte9309 7 жыл бұрын

how did you find 500 J?

@stepbystepscience 7 жыл бұрын

PE = mgh = 10 kg x 10 m/s2 x 5 m = 500 J. As I said in the video I rounded g from 9.81 to 10 to make the numbers easier to follow. Does that help?

@milanimgaga1179 6 жыл бұрын

still dont get it

@layanas4094 9 жыл бұрын

would you please explain if the system wasn't conserved

@stepbystepscience 9 жыл бұрын

Layan As Sorry I did not respond earlier, traveling. In brief, the most common case is with friction. If there is friction then the PE at the top will not equal the KE at the bottom because the force of friction will do work on the object as it slides down the slope. But still the PE(top) = KE(bottom) + Work(friction force)

@circa326 7 жыл бұрын

Tom Hanks?

@stepbystepscience 7 жыл бұрын

Your choice, Tom Hanks, Vin Diesel or Vince Vaughn??? Either way thanks for watching!

@Petrolways 5 жыл бұрын

THANK YOUUUUUUUUUUUUUUUUUUUUUUUUUUUI

@stepbystepscience 5 жыл бұрын

You are vvvvvvvvvvvvvvery welcome!

@Petrolways 5 жыл бұрын

Step-by-Step Science ❤️❤️❤️

@vuyanenduna6494 8 жыл бұрын

thumps up

@stepbystepscience 8 жыл бұрын

that is all i ask! thanks.

@fadeelsuleiman2801 8 жыл бұрын

cool

@stepbystepscience 8 жыл бұрын

+fadeel suleiman Thank you….you can a listing of all my videos from my website, www.stepbystepscience.com

@bekiao Ай бұрын

Wow

@stepbystepscience Ай бұрын

Thanks

@bekiao Ай бұрын

tanks my teacher God bless you from Ethiopia 🇪🇹🇪🇹

@bekiao Ай бұрын

Can i get your email Please

@mehularora3234 6 жыл бұрын

Tom hanks of Science wars :D

@DeAngeloYouKnow 8 жыл бұрын

my nice positive comment is I love you

@stepbystepscience 8 жыл бұрын

That is a nice nice positive comment. You can see a listing of all my videos at www.stepbystepscience.com

@ramdonuser12 4 жыл бұрын

gravity is equal to 9.81 just saying

@stepbystepscience 4 жыл бұрын

It is not really "gravity" that is equal to 9.81, it is the "acceleration due to gravity" at the surface of the Earth that is equal to 9.81 m/s2. Just to be clear about it.