The rotational kinetic energy of a solid sphere is
Correct answer: D. 2/5 mv^2
- A. 1/5 mv^2
- B. 1/2 mv^2
- C. mv^2
- D. 2/5 mv^2
Explanation
Explanation: The correct formula for the rotational kinetic energy of a solid sphere is 2/5 mv^2, where m is the mass of the sphere and v is its rotational velocity. This formula is derived from the moment of inertia of a solid sphere
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About Kinetic Energy
Kinetic energy is the energy of motion, given for a nonrelativistic object by K = ½mv², so it depends on mass and the square of speed. Questions connect kinetic energy with work through the work energy theorem, calculate changes in kinetic energy, and distinguish it from momentum and potential energy.
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