Answer to Question #159737 in Classical Mechanics for Nurulain Fatihah

Question

Motion of a planet of mass mp in our solar system is an example of motions under the action of 

central force F

⃗ c due to the sun of mass Ms. 

a)

Is F

⃗ c

a conservative force? Explain your answer.

b)

It is well known that the planet is moving about the sun in a same fixed orbit located on a 

fixed orbital plane. Name two (2) physical principles that dictate why the planet moves the 

way it does. Explain your answers.

c)

The orbit of the planet has an eccentricity ϵ = 0.047 and semi-major axis a = 19.18 AU. Use

the octave script provided to plot the orbit. Mark the perihelion and the aphelion centre of 

the orbit on the plot.

Answer 1

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