At the bottom of the inclined plane, the total potential energy is converted into translational kinetic energy as shown in the below figure.
The sphere has two kinds of kinetic energy: translational and rotational. The translational kinetic energy is given by the usual equation: 1/2 mv^2.
The rotational energy is 1/2 Iω^2.
At the bottom of the inclined plane, the total potential energy is converted into translational kinetic energy as shown in the bellow figure
For a solid sphere I = 2/5 mr^2,
where r is the radius of the sphere. the last term of the rotational kinetic energy is the angular velocity, which may be expressed in radians/second or other units like the one shown below: linear velocity units/linear units. In these last cases, you have to change the angular velocity to linear velocity.
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