Does mars have gravity? gravitaional pull? or zero gravity?

Answer 1

Mars has about 1/2 the gravity of Earth.

Answer 2

Does Mars Have Gravity

Answer 3

Wow, not trying to be a jerk, but a lot of you have the wrong information on Mars.

Mars is about 2/3rd's the size of Earth, not 1/3.
Mars has about 1/3rd the gravity of the Earth
The Moon has about 1/6th the gravity of Earth by comparison.

ANY object in space exhibits a gravitational pull, even if it's miniscule. Asteroids and Comets have a higher gravitational pull than say the Space Station, while planets of course have even larger gravitational pulls. Stars have a massive amount of gravitational pull and of course Black Holes have the largest gravitational pulls. Think of them as "gravity wells".

Answer 4

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RE:
Does mars have gravity? gravitaional pull? or zero gravity?

Answer 5

Yes. Mars has its own gravity pull, but it is 1/3 of the Earth.

Answer 6

Mars does indeed have a gravity, because gravity is dependant on mass. Even though Mars is half earth's size, it is less dense, and therefore has less than half earth's mass. The gravity on mars is about 1/3 of that on Earth.

Answer 7

Of course mars has gravity everything that has a mass in the universe has gravity even you. But how much mass a certain object has determines its gravity, for example the more mass a object has the greater its gravity. mars has gravity just not as much as earth. to prove this mars has two moons.

Answer 8

All objects with mass have gravity.

Mars only has about 11% of mass as Earth, so at a given distance it only has about 11% of gravity as Earth. However, it's radius is only about half that of Earth, so it's surface gravity is 38% that of Earth.

Answer 9

The gravitational pull on Mars is about 3/8 that of Earth; a man weighing 160 pounds here will weigh about 60 pounds on Mars.

Answer 10

Surface gravity (the acceleration of a freely falling body at or near the surface) is proportional to the mass of the planet and to the inverse of the square of the radius.

If you take Earth's gravity (9.8 m/s^2 = 32.2 ft/s^2) as the unit 1 g, then the surface gravity on any other planet (or spherical body where the mass is uniformely distributed in concentric layers) can be found with:

g = M / r^2

where M is the mass of the planet in fractions (or multiples) of Earth's mass, and
r is the radius of the planet in Earth radii.

Here is a table showing the mass and radius of major planets (in bracket = radius squared):

M - 0.055 - 0.382 (0.146)
V - 0.815 - 0.949 (0.900)
E - 1.000 - 1.000 (1.000) gravity = 1 g
M - 0.107 - 0.532 (0.284)
J - 317.8 - 11.21 (125.6) top of clouds
S - 95.16 - 9.450 (89.30) top of clouds

Jupiter and Saturn have no real "surface"; the radius is given for the altitude in the atmosphere where the pressure is the same as the air pressure at Earth's surface (1 atmosphere = 101.325 kPa = 14.7 psi), which is not quite, but almost at the cloud tops.

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gravity is the effect of the presence of mass. All planets have mass. The Sun, despite being a ball of hot gas, is the most massive object in our solar system. If we take the top of the photosphere (the visible part of the Sun's disc), you can use a mass of 332,946 times the mass of Earth and a radius of 109.17 times that of Earth.

332946 / (109.17*109.17) = 27.94 g

27.94 times the surface gravity of Earth
17.94 * 9.8 m/s^2 = 273.8 m/s^2 (899.6 ft/s^2).

The number is a representation of the amount of gravitational pull that the Sun has at its surface. The gravitational pull of any mass decreases with distance, but it is never exactly 0.