How do you Find Gravitation Field strength

AI Thread Summary
To find the gravitational field strength on the surface of a star with a radius of 5.0 x 10^6 km and a mass of 6.0 x 10^33 kg, the formula F=G MM/r^2 is used. Users noted that their calculated answers seemed incorrect or unexpected. Comparisons to Earth's mass and radius were suggested as a way to understand the scale of the star's gravitational strength. The discussion emphasizes the importance of correctly applying gravitational equations to obtain accurate results. Accurate calculations are essential for understanding gravitational effects in astrophysics.
antphany
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Homework Statement


what is the gravitational field strength on the surface of a star that has a radius of 5.0 x 10^6km and a mass of 6.0 x 10^33 kg


Homework Equations



i tried the F=G MM/r^2

The Attempt at a Solution


answer was rly weird and off
 
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What answer do you get, and what is the correct answer?
 
antphany said:

Homework Statement


what is the gravitational field strength on the surface of a star that has a radius of 5.0 x 10^6km and a mass of 6.0 x 10^33 kg


Homework Equations



i tried the F=G MM/r^2

The Attempt at a Solution


answer was rly weird and off

How do the mass and radius compare to the Earth - I expect mass is much bigger. That could give you the answer by comparison.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
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Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

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