23. [3pt] Starting from rest at the same height, four round toys roll down a hill....
23. [3pt] Starting from rest at the same height, four round toys roll down a hill. The toys have different radii, and shapes, but the same masses. Rank the toys in terms of their total kinetic energy at the bottom, from least to greatest. List ties alphabetically.
For example: D < A = C < B .
A = solid sphere; B = cylinder C = hollow sphere; and D = hoop.
Homework Answers
Rank D = A = C =B .
Because by applying conservation of energy , potential energy at top is same for all objects as they have same mass and elevation , total kinetic energy at bottom must all be same.
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23. [3pt] Starting from rest at the same height, four round toys
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