For gravity on the earth, that number is about 981 (m/s^2) since that doesn't change anywhere on earth, the only thing that changes the force of gravity (as long as you're on earth) is the mass of the object (which is a lot like how much it weighs. Breaking the law of gravity douglas torr started writing papers with a chinese woman physicist named ning li, predicting that superconductors could affect the force of gravity. Gravity is the force that gives weight to objects and causes them to fall to the ground when dropped two major factors, mass and distance, affect the strength of gravitational force on an object. The effects of hypergravity with funding for spaceflight experiments having waned since the columbia disaster in 2003, nasa has more recently supported musgrave's research involving plants grown on the other end of the gravity continuum - in high gravity, or hypergravity.
My physics teacher told us (while teaching the topic gravitation) that gravity has a effect on height of human body, he gave us following examples: the height of astronauts after coming back to earth is found to be increased slightly. Gravity is the force that attracts a body toward the center of the earth, or toward any other physical body having mass gravity on earth equals 981 m/s^2 spine. This effect measures the amount of time that has elapsed between two events by observers at different distances from a gravitational mass in other words, time runs slower wherever gravity is strongest, and this is because gravity curves space-time. The force of gravity acts on all masses equally, even though the effects on all masses may be very different earth's gravity exerts a downward pull on a dropped coin remember that every action force has an equal and opposite reaction force.
You are right - gravity does change across the surface of the earth and throughout its atmosphere, due to several effects first, there is the variation of gravity with latitude that you alluded to: you weigh about 05% more at the poles than on the equator. Gravity attracts objects that have mass and pulls them toward the center of the earth everything on earth is held by gravity including the atmosphere. One of the most noticeable effects of gravity in the solar system is the orbit of the planets the sun could hold 13 million earths so its mass has a strong gravitational pull when a planet tries to go past the sun at a high rate of speed, gravity grabs the planet and pulls it towards the sun. The biological adaptations to gravity don't stop there when we're standing up, our heart, itself a muscle pump, has to work against gravity, pushing blood vertically in the carotid arteries. Perhaps, the most noticeable effect of gravity on the body is compression of the spine our spine consists of vertebrae and sponge-like discs the downward force of gravity causes the discs to lose moisture throughout the day, resulting in a daily height loss of up to 1/2 - 3/4.
The sensation of weightlessness, or zero gravity, happens when the effects of gravity are not felt technically speaking, gravity does exist everywhere in the universe because it is defined as the. Gravity has an inordinate effect on a bullet's flight path but because it's consistent, gravity can be easily overcome to make an accurate shot the biggest accuracy variable to account for is gravity. When astronauts spend long periods of time at zero gravity in space, their hearts become more spherical and lose muscle mass, a new study finds, which could lead to cardiac problems. The moon's gravity pulls on the earth and makes the tides rise and fall every day as the moon passes over the ocean, there is a swell in the sea level as the earth rotates, the moon passes over new parts of the earth, causing the swell to move also. Gravity affects everything in the universe, but the amount of gravity affecting an object depends on two things: the masses of the objects being attracted and the distance between the objects.
Puff - researchers are also checking the effects of low gravity on the lungs in this experiment aboard the international space station pedal faster --yury v usachev of rosaviakosmos, expedition two mission commander, exercises on the cycle ergometer in the zvezda service module on the international space station. An important effect of gravity on the earth is that the sun's gravity is responsible for the earth's regular orbit through the solar system the earth travels at a velocity that approximates the force the sun exerts on the planet, resulting in a regular orbit. Gravity (from latin gravitas, meaning 'weight'), or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light —are brought toward (or gravitate toward) one another.
Weight is a measurement of the force on a object caused by gravity trying to pull the object down mars has less gravity than earth mars has less gravity than earth therefore if you were on mars you'd weigh less because the force of gravity wouldn't be as strong as it is here on earth. Medical experiments investigating the environmental effects of the martian environment such as prolonged radiation and reduced gravity should also be carried out. Changes in muscle performance, coupled with the effects of microgravity on connective tissues and the demands of activities of varying intensities, place astronauts at risk of fatigue and injury.