Question

The figure shows the variation of energy with the radius of orbit a body in circular planetary motion. Find the correct statement about the curves A, B and C.

• A. A shows the kinetic energy, B the total energy and C the potential energy of the system
• B. C shows the total energy, B the kinetic energy and A the potential energy of the system
• C. C and A are kinetic and potential energies respectively and B is the total energy of the system
• D. A and B are kinetic and potential energies and C is the total energy of the system

Answer 1

The correct option is D A and B are kinetic and potential energies and C is the total energy of the system

P.E + K.E = $\frac{-GMm}{R}+\frac{GMm}{2R}$
T.E = $\frac{-GMm}{2R}$
A is K.E, B is P.E, C is T.E