How to solve a Kepler's Third Law problem

I take you through a worked solution of a Kepler's Third Law problem
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[@davidwoek3041]

Simple, and very effective video, thank you. You have a wonderful, soothing voice as well!

[@PhysicsHigh]

Thanks!

[@bggaming2146]

do you know how he gets 59.4?

[@davidwoek3041]

@@bggaming2146 T^2 = 8 * 21^2 ("^2" means squared, "*" means multiply) T^2 = 8 * 441 T^2 = 3528 now we want to know T, not T^2, so we take the square root of both sides sqrt(T^2) = sqrt(3528) T = sqrt(3528) T = 59,39696962... T = 59,4 approximately I hope this helps!

[@Facts_Quod]

Thanks Sir because of you I finally understood how this law works

[@PhysicsHigh]

Glad to hear that

[@colinmerkle1084]

How did you write backwards tho

[@PrincessPeach50]

I realized like halfway through the video, not only his mathematical skills but his ability to write backwards hahaha

[@theodoresweger4948]

Thanks very well done.

[@bggaming2146]

great video but how did you get 59.4 days, in the calculator 8*21^2 is coming up different

[@davidwoek3041]

T^2 = 8 * 21^2 ("^2" means squared, "*" means multiply) T^2 = 8 * 441 T^2 = 3528 now we want to know T, not T^2, so we take the square root of both sides sqrt(T^2) = sqrt(3528) T = sqrt(3528) T = 59,39696962... T = 59,4 approximately I hope this helps!

[@sealingontheceiling9120]

@@davidwoek3041 Didn't have the same problem on my calculator but just wanted to say what a great explanation that was!

[@emperor8716]

thank you so much

[@Slymarauder]

Thank you!

[@theodoresweger4948]

My question is where can I ger a sweeter like that??

[@duramax78]

I got approx 64 days, I just times 21xp.i. And got approximately 64 what am I doing wrong.?

[@tanvirlatif3203]

I love you

[@princevegeta5907]

Can you post a video on mathematically proving the Kepler's laws?

[@PhysicsHigh]

In what regards? That the orbits are ellipses? How Kepler worked it out?

[@princevegeta5907]

@@PhysicsHigh Especially the third law. Id est the mathematical proof of T² proportional to r³.

[@johnpauldasalla7122]

How did you get the 59.4 days?

[@dicko2025]

watch the video

[@stem2232]

Sir I am interested in astronomy.....how much time you take to upload full astronomy course?

[@PhysicsHigh]

I More astronomy is on my to do list.

[@stem2232]

High School Physics Explained thankyou sir waitingggh