Rotational kinetic energy | Moments, torque, and angular momentum | Physics | Khan Academy

In this video David explains what rotational kinetic energy is and how to calculate it.

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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[jimmyalderson]

Could you integrate angular momentum to get angular kinetic energy?

[tanmayvad]

Can u explain why the surface integral of a sphere is in terms of the eccentricity rather than the radius ?

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[deoczidGONI]

What is the difference between this and the Magnus effect/force?

[abre.ham]

Why is here Angular speed constant every where? In the previous lesson you said radius and Angular speed are inversily proportional (e.g skating

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awesome but not availiable on official site of khan acADEMY

[TrueBlackHistory]

So why do moons/stars spin backwards creating an angular problem?

[konozrashid]

If an object isn't anchored at a point i.e it's rotating freely without any pivot, will it always rotate about it's center of mass, no matter if it's an irregular shape?

[JosueA_]

in minute 3.06 you mention that velocity is directly proportional to the radius. When we talk about angular momentum and there is absence of torque, angular velocity is inversely proportional to the radius. Why is it?

[abhijit]

Can anyone explain why omega is same for Every particle?

[priyeshajha]

Why does the same momentum give extra energy in the form of rotation?