- #1
BadSkittles
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The gravitational field g due to a point mass M may be obtained by analogy with the electric field by writing an expression for the gravitational force on a test mass, and dividing by the magnitude of the test mass, m. Show that Gauss' law for the gravitational field reads:
phi = oint g*dA=-4*pi*GM
where G is the gravitational constant.
Use this result to calculate the gravitational acceleration g at a distance of R/2 from the center of a planet of radius R = 6.15 x 1006 m and M = 4.25 x 1024 kg.
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Hi, I got the final equation to be g= G M / r^2. My final result was -29.9 m/s^2. But that's not correct. I don't see what i did wrong. Anyone has any ideas?
phi = oint g*dA=-4*pi*GM
where G is the gravitational constant.
Use this result to calculate the gravitational acceleration g at a distance of R/2 from the center of a planet of radius R = 6.15 x 1006 m and M = 4.25 x 1024 kg.
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Hi, I got the final equation to be g= G M / r^2. My final result was -29.9 m/s^2. But that's not correct. I don't see what i did wrong. Anyone has any ideas?