Conservation of energy | Physics | Khan Academy

[@Salah_-_Uddin]

Thanks for it.

[@confidosine]

For the first example, you also have to assume that the normal force exerted by the ramp is always perpendicular to the ball's velocity so that the work done by it is 0. And if it is rotating it becomes more complicated because some of the potential energy is also converted into rotational kinetic energy.

[@aidan6620]

Great explanation, thank you :D

[@lyricsden]

Thank you for this

[@sardarbekomurbekov1030]

Is it coloumb's law in equation for calculating distance r? Should r be squared?

[@bharath__100]

r² appears in the formula for electric force, whereas its only r in the formula for PE

[@feyraism]

Mahesh shenoy❤️❤️❤️