- #1

Addez123

- 199

- 21

- Homework Statement
- A solid ball rolls smoothly from rest (At 6m) until it leaves the ramp (at 2m). How far horizontally from point 'a' does the ball hit the ground?

Hint: Smooth rolling means it does not slide.

- Relevant Equations
- v = ωr

a = αr

##K = \frac {1}{2}Iω^2 + \frac {1}{2}mv^2##

*Figure of the problem.*

There are many exercises like these, and I've read the whole chapter and I got no clue where to start here.

Kinetic energy from gravity is: E = mgh = 39.3m

I could try change v to ωr in the K equation but it will leave me nowhere because I don't have the mass nor the radius of the ball.

I'm obviously looking for the velocity at point v, assuming it has no vertical component (altho that's not specified either), but I have no way of getting it.

Anyone has a clue what to do here?