Extremadura PAU Physics Practice Questions - Extremadura PAU Physics (Física) Exam

Access More Questions

Which statement correctly describes the sign and physical interpretation of gravitational potential energy Ep = -G * M * m / r for a two-body bound system?

Ep is always negative because energy must be added to the system to separate the masses to infinity where Ep = 0. Ep is always positive because gravity is an attractive force. Ep is zero at the surface of the primary body and becomes negative at infinity. Ep is positive for bound orbits and negative for unbound hyperbolic trajectories.

Correct Answer:

Ep is always negative because energy must be added to the system to separate the masses to infinity where Ep = 0.

Access more questions from this quiz

Continue to Extremadura PAU Physics Practice Questions - Extremadura PAU Physics (Física) Exam for more practice questions and the full quiz experience.

Access More Questions