THE PRACTICE STUDIO
Go slowly. Ask why. Make it yours.
PRACTICE / Kepler laws
Equal area is not equal angular speed
A satellite follows a bound ellipse with rₐ = 3rₚ. Compare its instantaneous angular speed about the primary at the two apsides.
What is ωₚ/ωₐ?
Organize the givens & assumptions
- rₐ/rₚ = 3
- Both positions are turning points of radial distance
Unforced central inverse-square motion about a dominant primary; angular speeds are positive magnitudes.
- A
- B
- C
- D
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