Calculating Speed of Bowling Ball Down Incline

[physicsgurl12]

Homework Statement

a bowling ball with a mass of 5.45kg and a radius of .191m starts from the rest at a height of 1.8m and rolls down a 22.3m slope. what is the translational speed of the ball when it leaves the incline.

Homework Equations

E=mgh +1/2mv^2+1/2Lw^2

The Attempt at a Solution

E=5.45kg*9.81m/s*1.8m+ 1/2 %.45kg* v^2+1/2 Lw^2
?is this even right?

 

[I like Serena]

Hi physicsgurl12!

Homework Equations

E=mgh +1/2mv^2+1/2Lw^2

The Attempt at a Solution

E=5.45kg*9.81m/s*1.8m+ 1/2 %.45kg* v^2+1/2 Lw^2
?is this even right?

You need more relevant equations.
That is, you need one for L (although the symbol is usually I), and you need one for w (for which the symbol is usually ω).
Can you get those?

Furthermore you need to make a distinction between the initial position, where v and w are zero, and the final position, where h is zero.

The energy E in both the initial position and the final position must be the same.