A solid spherical ball rolls without slipping on a table. Find the ratio of its rotational kinetic energy to its total kinetic energy.
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A solid spherical ball rolls without slipping on a table. Find the ratio of its rotational kinetic energy to its total kinetic energy.

G1 Physics · Accepted Answer

Step 1: For solid sphere I=2MR²/5. Step 2: The rotational energy fraction = [I/(MR²)]/[1+I/(MR²)] = (2/5)/(1+2/5)=2/7. Final answer: D — 2/7.