Centripetal force problem solving | Centripetal force and gravitation | Physics | Khan Academy

In this video David gives some problem solving strategies for centripetal force problems and explains many common misconceptions people have about centripetal forces.

Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.

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[alevelsdemystified]

1.Draw a quality force diagram.
2.Use newton's second law for one direction at a time, in order to single out the direction you need to solve for.
3.Remember the formula for centripetal acceleration, and plug it into the second law equation.

[LtCrispo]

This one video has just helped me understand circular motion better that what 6 hours of research did

[geniusme]

U just solved my crisis with centripetal force, can't thank u enough

[MakeMeScientific]

which software and pen tablet do you use for making these excellent videos??? Thank You

[alexandriaa]

I FINALLY UNDERSTAND WHY NORMAL FORCE ON A HILL IS LESS THAN Fn FLAT! The whole "if you go too fast, you'll continue the direction of your velocity" helped SO much.

[saramehravar]

I wish i could give this video Like! Thank You!

[PenandPaperScience]

For those that want some more practice on the Centripetal Force, I've uploaded a video where I solve such problems step-by-step. It might help some of you :)

[DanielFBest]

This was fun, and educational... good demonstration of knowledge, fantastic ways of derivation. 🚲

[PhilosophicalFortniteClipper]

Amazing, super clear instruction, didn't leave any holes, thanks!

[mcdallywacker]

Already more than halfway through my mech. Engineering degree but I love coming back to these videos to review. Physics is awesome.

[aurorahenelius]

thank you so much for this video! You managed to make it informative, simple and super entertaining all at the same time! Now that is how you make physics fun :))

[anikajha]

Hi Khan Academy! Your courses are exceedingly valuable for the research project that I'm doing! I had a question:

If you're given the radius of a circular path that a car is traveling around, at a given velocity, but you don't know the mass of the car, how would you solve such a problem? (If being asked to find the centripetal force) Basically, what I'm asking is that how do you solve a centripetal force problem without knowing the mass?

Thanks in advance,
Anika

[Linaiz]

The best explanation I have encountered. Very clear and informative!

[xiaolinwang]

It directly gives me a clear view of circular motion. Thanks

[scooter_]

Thanks so much man! You just earned a subscriber and a like! keep up the quality videos, love Khan Academy!

[shohrehr]

i've got a question..
you solved the bycicle problem when it is exactly at the top of the hill while the Fc would be different when it is during the way up or down.. i mean Fc is equal to (Fgcos(a) - Fn).. what about that?

[gooddeedsleadto]

Tension in the string, radially inward friction force or gravitational force are there to counter the tangential velocity?

Tangential velocity is the tendency of the car to go out along the tangent.
The force of friction act in a radially inward direction to carry the centripetal acceleration occurring from the continual resultant change in velocity?
Thanks

[antiawarenessawarenessclub]

That bit about how there's no such thing as centrifugal force helped my solve a question I was puzzling over. thank you

[arike]

I can't thank you enough for this video !!

[theadel]

In engineering we consider a centrifugal force(fictitious force) which points away from the center instead of the centripetal force in the kinds of problems like the ones solved in this video to make directions(signs of forces) easy to determine and more intuitive.