Work as the Dot Product

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Күн бұрын

Work as the dot product is defined. The dot product using unit vectors is reviewed. Several examples are worked through. Want Lecture Notes? www.flippingphysics.com/work-d... This is an AP Physics C: Mechanics topic.
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Thank you to John Paul Nichols, Julie Langenbrunner, Scott Carter, Lon Cherryholmes, and Scott Carter for being my Quality Control Team for this video. flippingphysics.com/quality-co...
Content Times:
0:00 Non-Dot Product Work
1:13 Reviewing the Dot Product
3:26 Dot Product Review Example
6:48 Dot Product Work Example
8:46 Work on Shopping Cart - Force Applied
11:11 Work on Shopping Cart - Other Forces
13:54 Net Work on Shopping Cart
#APPhysicsC #Work #dotproduct
Correction:
8:03 I accidentally switched the order of the force and r-position vectors in the dot product. This means I switched which vectors have components of zero in the j and k directions. The force vector has no component in the j direction. The r-position vector has no component in the k direction. Sorry about that!!

Пікірлер: 45

@BoZhaoengineering 3 жыл бұрын

These basics are always my favorite as a structural/mechanic engineer for many years

@FlippingPhysics 3 жыл бұрын

Agreed.

@thegreatmohau288 2 жыл бұрын

It is my first time learning about the Dot Product. I graduated high school this year and I am looking forward to majoring in Physics and Mathematics starting from next year. You are doing a great job Flipping Physics team. I have been watching your videos since 10th grade. ~ MT Mokoena

@thegreatmohau288 2 жыл бұрын

Example number 3 is kinda giving me a tough time though 😅. I guess I need some rest and I will get back to it 😎📚.

@shelldn1 Жыл бұрын

Great explanation. Many thanks!

@ryanjamesconiendo4429 Жыл бұрын

i can see how arduous what you are doing in editing sir 💪 hats up 💪

@xyliahvortex661 3 жыл бұрын

Great video and I hope you're doing well!

@johncelorio6023 2 жыл бұрын

Thanks a lot, this was great!

@NeonArtzMotionDesigns 3 жыл бұрын

Oh shoot I didn't think of that this way, that's pretty cool!

@darvshdomain2763 3 жыл бұрын

Indian Students already have done this ( those prepeparing for JEE and NEET ) :) I don't think other nations have Smart Indian students , Love from India , ur videos help us

@FlippingPhysics 3 жыл бұрын

I am glad I am able to help educate Indian students. 😀

@darvshdomain2763 3 жыл бұрын

@@FlippingPhysics Ur Videos are so experimented oriented , I love them so so much :)

@Diamond_Hanz 2 жыл бұрын

I love this

@broysthgaming3877 Жыл бұрын

Thank you so much finally, I understand it.

@FlippingPhysics Жыл бұрын

Wonderful!

@jimluan3670 3 жыл бұрын

Would you please recommend a good textbook for APC students? Thank you.

@raziaanam1747 3 жыл бұрын

sir do you find the syllabus of MCAT/SAT/ AP physics syllabus similar to NEET and JEE

@shubhpatel1064 7 ай бұрын

Bro just saved my grade

@raziaanam1747 3 жыл бұрын

SIR COULD YOU PLEASE MAKE VIDEOS ON MODERN PHYSICS, FLUIDS AND FLUID DYNAMICS AND MAGNETISM

@kashifhussains2951 3 жыл бұрын

Don't know how to thank u💙

@Nitstar6174 3 жыл бұрын

I think this is the 50th time you used the shopping cart example in a video. It is highly instructive though. :)

@FlippingPhysics 3 жыл бұрын

'tis a good example

@Nitstar6174 3 жыл бұрын

@@FlippingPhysics Also, do you always keep this short "I want my 2 dollars thing" on every work and energy video?

@1hparnab177 2 жыл бұрын

Hello sir, pls explain cross product like this please

@FlippingPhysics 2 жыл бұрын

Here you go: www.flippingphysics.com/torque-cross-product.html

@nitin2749 3 жыл бұрын

Big fan bro

@FlippingPhysics 3 жыл бұрын

thanks

@cw9249 Жыл бұрын

omg youre the guy from big bang theory wearing the glasses

@FlippingPhysics Жыл бұрын

not true

@naderahmed78 2 жыл бұрын

you forgot the negative sign for the friction force when you calculate the work done by friction force w=(-7)*(-6.9)sin 59 cos(180)

@FlippingPhysics 2 жыл бұрын

Actually, no. 0:22 "Remember we use the magnitudes of force and displacement in the work equation."

@cesarmoreno987y 3 жыл бұрын

You gotta pay your two dollars man

@sheikhtsukki1190 3 жыл бұрын

4:10

@ShortWouldYouRather 3 жыл бұрын

The dot product isnt commutative right? We learnt that A x B = - B x A

@FlippingPhysics 3 жыл бұрын

That's the cross product, which is not commutative. A x B = - B x A The dot product is commutative. A • B = B • A

@darvshdomain2763 3 жыл бұрын

U Make videos according to syallbus that is being covered In India :) U Will definately get more views

@darvshdomain2763 3 жыл бұрын

and This will help many students in india , specifically those who can't afford a coaching in India [ they are really expensive , trust me , I am involved in one of the coachings ]

@FlippingPhysics 3 жыл бұрын

I am making videos which fit into the JEE syllabus. This video is a good example of that.

@darvshdomain2763 3 жыл бұрын

@@FlippingPhysics But the JEE Syallbus is much ahead than what u r teaching , this has been completed in JUNE 2020 ( NEET 2022 / JEE 2022 Aspirants ) , plz think over it

@zee458 3 жыл бұрын

@@FlippingPhysics I have heard that JEE examination is for students from india wanting to go to IIT, I have one friend who got admission in IIT but now as a transfer he is in stanford ! When I asked him about his time in IIT he said he was not happy about it , he said over at IIT they feed you more with memorizing stuff rather than actually explaining the real meaning behind the subjects which in terms makes JEE an overrated exam !

@FlippingPhysics 3 жыл бұрын

That is too bad. I have never been a fan of memorization.