If this experiment does not give you mass of the rolling object (solid cylinder/sphere), are you still able to calculate the % error of the moment inertia?

QUESTIONS:

1. Assuming that a person releases both a solid cylinder and solid sphere (with the same mass and radius) from rest at location A, which object do you expect will reach location B first?

2. If this experiment does not give you mass of the rolling object (solid cylinder/sphere), are you still able to calculate the % error of the moment inertia?

3. Based on the experimental data in the video, can you calculate the object’s translational acceleration and angular acceleration?