Rotational energy

[ahyeoncho]

This professor is the best physics professor out there because it’s easy to understand and interesting to watch how he writes. Knowledge and presentation score 10/10

[EERB-uc]

Dr.Strange Benedict Cumberbatch is here bro

[manuboker]

Best physics teacher ever ! Thank you so much :))

[siddharthdyavanapalli]

wish to meet u once in my life
sir
that was .... like no words to say

[nareshmishra]

thanks sir, really awesome explanation

[clauserhardt]

Thank you very much for such awesome and clear explanation .

[eurosenelsuelo]

I love these videos but this time I've to say a little thing. At the end is true that you did the work but that energy went to the string and then to the ball. So the string did the work over the ball. When the ball is going to R to r then the angle between v and radius is not 90 so it can add velocity(energy) to the ball.

[mibrahim]

but in kinetic energy isn't the velocity a vector? and it's tangent to the circle !? and omega the same as well ?
but KE is scalar ... I'm confused ...

[nareshmishra]

thanks sir, really awesome explanation