Also write formula if you know.
2006-10-25 09:25:38 · 6 answers · asked by Live & Let Live! 1 in Science & Mathematics ➔ Astronomy & Space
Sure Newton's equation for gravitational acceleration Gm*Msun/R^2
2006-10-25 09:28:29 · answer #1 · answered by arbiter007 6 · 0⤊ 0⤋
The sun is just a giant ball of gas held together by its own gravity; since there's no solid surface to be 'on', your question needs to be rephrased. Astronomers commonly define the 'surface' of the sun as the photosphere, the uppermost region of glowing opaque gas which is the 'surface' we see when we look at the sun. The photosphere lies 695000 km from the centre of the sun, and the sun's mass is 2 * 10^30 kg.
The gravitational acceleration at a point on or above a spherical mass is
M
g = G -----
r^2
where G is the universal gravitational constant (6.67 * 10^(-11)) and r and M are the distance and mass given above. We get
g = 275 m/s^2
which is 28 times as strong as gravity on the surface of the Earth. From our experience with astronauts and pilots undergoing high acceleration, we know that humans lose consciousness with this much gravity because the heart can't pump the blood up to the head, and would probably die if exposed to loads this high for a long time.
2006-10-25 23:33:23 · answer #2 · answered by pavan kumar NC 2 · 0⤊ 0⤋
The gravitational force keeps the planets in orbit about the sun. the Average gravitational acceleration is about 981 gal, or 981000 mGal.
2006-10-26 01:25:43 · answer #3 · answered by nishit 1 · 0⤊ 0⤋
The acceleration of all gravitational fields is c2 = E/m. This equation demonstrates that energy is required to form a gravitational field. The energy contained within our sun, as our planet, is the heat energy contained within. As this value changes, so does the gravitational field. The gravitational intensity of our sun is 28 times greater than our planet.
http://360.yahoo.com/noddarc might be of interest.
2006-10-25 11:38:21 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Gravitational forces depend on the mass and distance of the 2 objects (at least) in question. Gravitational force is not a trait of an object by itself. See the answers above for the equation.
2006-10-25 09:33:03 · answer #5 · answered by Anonymous · 0⤊ 0⤋
GM/R^2.
Mass of the Sun, M=about 2E30 kg.
Radius of the Sun, R=about 696,000,000 meters
Gravitational constant, G=6.6742E-11
So GM/R^2=275.6 m/s^2, about 28 gees.
2006-10-25 09:28:38 · answer #6 · answered by campbelp2002 7 · 0⤊ 0⤋