COMEDK · Physics · 9. Gravitation
Kepler's second law of planetary motion corresponds to
- A conservation of energy
- B conservation of angular momentum
- C conservation of linear momentum
- D conservation of mass
Answer & Solution
Correct Answer
(B) conservation of angular momentum
Step-by-step Solution
Detailed explanation
Kepler's second law states that the radius vector joining a planet to the sun sweeps out equal areas in equal intervals of time. The area swept by the radius vector in a small time interval \(dt\) is given by \(dA = \dfrac{1}{2} |\vec{r} \times d\vec{r}|\). Since…
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