Bowling ball

  • #1

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?
 

Answers and Replies

  • #2
I like Serena
Homework Helper
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Hi physicsgurl12! :smile:

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.
 

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