Question 3 In 2004 astronomers reported the discovery of a large Jupiter-sized planet orbiting in circular path very close to the star HD 179949. The orbit was 6.4×10° km, and it takes the planet only 3.09 days to make one orbit. (a) What is the mass of star? (b) How fast is this planet moving? Explain your calculations. а.

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Question 3
In 2004 astronomers reported the discovery of a large Jupiter-sized planet orbiting in circular path
very close to the star HD 179949. The orbit was 6.4×10° km, and it takes the planet only 3.09 days
to make one orbit. (a) What is the mass of star? (b) How fast is this planet moving? Explain your
а.
calculations.
b. Consider a large massive spherical shell object. With all of its mass M is distributed at its radius R
(shown in the figure). Draw a schematic graph of gravitational force and corresponding
gravitational potential energy experienced by another object m at a distance r, where the distance
varies as, r → 0 to r → ∞.
R
M
Figure 4: Question 3(b) Two masses system
Transcribed Image Text:Question 3 In 2004 astronomers reported the discovery of a large Jupiter-sized planet orbiting in circular path very close to the star HD 179949. The orbit was 6.4×10° km, and it takes the planet only 3.09 days to make one orbit. (a) What is the mass of star? (b) How fast is this planet moving? Explain your а. calculations. b. Consider a large massive spherical shell object. With all of its mass M is distributed at its radius R (shown in the figure). Draw a schematic graph of gravitational force and corresponding gravitational potential energy experienced by another object m at a distance r, where the distance varies as, r → 0 to r → ∞. R M Figure 4: Question 3(b) Two masses system
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