Performs Parts 1-3 in lab, Part 4 you answer by using your information gathered through Parts 1-3. Part 1. How does the mass of a rolling object affect its final speed (rotational & translational) at the bottom of an incline?

Part 2. How does the radius of a rolling object affect its final speed (rotational & translational) at the bottom of an incline?

Part 3. How does the shape of a rolling object affect its final speed (rotational & translational) at the bottom of an incline?

Part 4. Would a cart that has four disks for wheels have a final speed (rotational & translational) that is greater than, less than, or equal to the final speed of a single disk that has the same mass as the cart and wheels?

Data Analysis:

1. Determine both translational and rotational speeds for the objects at the bottom of the incline.

2. Suppose a cart with four wheels and a disk whose mass is equal to the total mass of the cart roll down the ramp. Which, if either, has more gravitational potential energy at the top?

3. Which of those objects has more kinetic energy at the bottom, why?

4. Imagine a disk just spinning in place instead of rolling. Would it have kinetic energy? Why?

5. Why does the cart (Part 4) have more speed at the bottom even though it doesn't have more kinetic energy than the d

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