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A star collapse onto itself from an initial radius R’ with its mass remaining unchanged. Which curve in figure best gives the gravitational acceleration a' on the surface of the star as a function of the radius of the star during the collapse?
Asked by shahidarfidi2000 | 28 Aug, 2019, 00:21: AM
answered-by-expert Expert Answer
gravitational acceleraion gp of a planet is given by,
 
gp = ( G Mp / Rp2 ) 
 
where Mp is mass of planet and Rp is radius assuming the planet is spherical shape. 
 
If mass is constant, then gravitational acceleration is inversely proportional to square of radius of planet.
 
Graph is shown below
 
Answered by Thiyagarajan K | 28 Aug, 2019, 08:01: AM

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