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## Homework Statement

A solid disk of mass m = 2.2 kg and radius r = .20 m starts from rest at a height h = 3.2 m and rolls without slipping down an incline plane with an angle of 30 degrees above the horizontal.

a What is the linear velocity of the disk at the bottom of the incline?

b How many revolutions has the disk turned through when it reaches the bottom?

c What is the magnitude total Kinetic Energy of the sphere at the bottom of the incline?

## Homework Equations

I=.5mr^2

Kinetic = .5*I*omega^2

## The Attempt at a Solution

I started by solving for the hyp => sin 30 = 3.2 /x where x=6.4

That's where I am stuck