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Usually, large size= large mass. The more mass you have the greater the gravity, but it also depends on how much mass is in a certain amount of space. For example if a large amount of mass spread over a large area the gravity will be less than if all that mass was condensed into a single point.
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Why Venus is the same size of earth and the same gravity?
Since Earth and Venus are roughly the same size AND have roughly the same mass, they have roughly the same gravity. The acceleration of gravity on the surface of Venus is 90.3% of what it is on Earth's surface.
Which has a more powerful gravity a small planet or a large planet?
It would depend on the mass of the planets. The surface gravity of a planet is directly proportional to its mass and inversely proportional to the square of its radius. If two planets have the same mass but different sizes, the smaller planet will have stronger gravity because the surface is closer to the center of mass. Conversely, if two planets are of the same size, the one with more mass will have stronger gravity. Since larger planets usually have more mass than smaller ones they usually have stronger gravity, though not always.
Does free-fall acceleration vary on other planets?
Yes, free-fall acceleration varies on other planets depending on their mass and radius. For example, the acceleration due to gravity on Mars is about 3.7 m/s^2, while on Jupiter it is about 24.8 m/s^2. This variation is due to the different masses and sizes of the planets.
Is there a link to planet size and its gravity?
Yes. To be clear, we have to consider size and mass separately. The gravity of an object increases with greater mass, but decreases with greater distance from the center If two planets have the same mass, but different sizes (meaning they have different densities) then the larger planet will have weaker gravity because the surface is farther from the center. Traditionally, the equation for finding the acceleration due to gravity is: g=G*m/(r^2) where G is a constant calculated to get the correct units, m is the mass in kilograms, and r^2 is the square of the distance from the center of mass as measured in meters. For finding the surface gravity of a planet, us the planet's radius for r. However, you can use a shortcut of this equation by tweaking the units: g=M/(R^2) where M is mass in Earth masses and R is the radius in Earth radii. By plugging in the mass and radius of a planet relative to that of Earth, you get gravity relative to Earth's surface gravity. For example, Jupiter is 318 times the mass of Earth and has about 11.2 times the radius. If we plug that into our equation g=318/(11.2^2)= 318/125.44 = 2.53. So Jupiter's "surface" gravity is about 2.5 times that of Earth.
How is gravity about the same on Mars and Mercury?
Well, honey, gravity ain't picky - it's the same everywhere! Both Mars and Mercury have gravity, but Mars is a bit heavier with about 0.38 times the gravity of Earth, while Mercury is even lighter with about 0.38 times the gravity of Earth. So, technically, they're both playing in the same gravity sandbox, just with different sized buckets.
How are the planets sizes related to their surface gravity?
Planet sizes are directly related to their surface gravity due to their mass and radius. Larger planets typically have greater mass, which increases their gravitational pull. However, if a planet is significantly larger but less dense, its surface gravity may not be as high as expected. Thus, surface gravity is influenced by both the planet's size (radius) and its density (mass per unit volume).
Why Venus is the same size of earth and the same gravity?
Since Earth and Venus are roughly the same size AND have roughly the same mass, they have roughly the same gravity. The acceleration of gravity on the surface of Venus is 90.3% of what it is on Earth's surface.
Which has a more powerful gravity a small planet or a large planet?
It would depend on the mass of the planets. The surface gravity of a planet is directly proportional to its mass and inversely proportional to the square of its radius. If two planets have the same mass but different sizes, the smaller planet will have stronger gravity because the surface is closer to the center of mass. Conversely, if two planets are of the same size, the one with more mass will have stronger gravity. Since larger planets usually have more mass than smaller ones they usually have stronger gravity, though not always.
How are the planets sizes related to the number of natural satellites in orbit around them?
6
How do the sizes of the inner planets compare to the sizes of the gas giant planets?
inner planets are small and outer planets are big and cold and gas giants.
Which group of planets has more in common the inner planets or the outer planets?
The inner planets (Mercury, Venus, Earth, Mars) have more in common with each other compared to the outer planets (Jupiter, Saturn, Uranus, Neptune). The inner planets are often referred to as terrestrial planets and are characterized by their solid surfaces and relatively small sizes, while the outer planets are gas giants with no solid surface and much larger sizes.
How are planets different?
There are many ways the planets are different. One way is that they all have different gravity levels, they are all different shapes and sizes. Lastly that they are different temperature, and different material.
What is gravity LIKE onother planets?
On all the planets it is a force that acts towards the centre of the planet. The force is different on the planes because they all have different size and mass. On Mercury, Venus and Mars the force of gravity can be calculated on the surface because those planets' sizes and masses are known and Newton's law of gravity can be applied. On those three planet the gravity would be less than on Earth. On the four outer planets it's more difficult because the planet we see is only the top of the cloud cover. It is not known if these planets have a rocky core that one could 'stand' on at all, because the atmosphere quickly becomes denser as the altitude is reduced, and there may be no suitable interface between rock and a reasonably gassy gas where an instrument could stand.
How does gravity between the sun and planets control the path the planets make around the sun?
The sizes of the Sun and planets determine the strength of gravitational pull of the planets on each other and the Sun. The Sun's mass is so great that the planets can't escape from the Sun's pull and so as the planets are moving by the Sun pulls them back into orbit.
Do planets and moons come in all sizes and colors?
Yes. Planets and moons come in all sizes and colors.
How do the sizes of inner planets compare to the sizes of gas giants?
The sizes of inner planets are generally smaller compared to the sizes of the gas giants. The inner planets are Mercury, Venus, Earth and Mars. The gas giants are Jupiter, Saturn, Uranus and Neptune.
What is different about the inner planets?
they are all different sizes
