In general, gravity can be defined as the force that pulls two objects together. It is the factor that keeps the planets in orbit around the Sun and keeps people from being thrown into space.
Any object with mass will have a gravitational force. The greater the mass, the stronger the gravitational force of that object. A planet as large as Earth will pull you together much more strongly than a small object like a piece of cake.
Distance is also a factor to consider. The closer you are to an object, the more gravity pulls you back. Meanwhile, the farther away the gravitational force is, the weaker it is.
The force of gravity on Earth is also uneven . According to NASA and data from the GRACE project, this force is slightly stronger in places where there is a greater concentration of mass on Earth. Even these focus points can change over time.
Reduced gravity can bring about many health problems.
So what if gravity on Earth suddenly halved? It is difficult to pinpoint, especially when what led to this sudden change is likely to have other effects as well. But by observing the surrounding universe, we can make some predictions.
First, you can lose quite a bit of weight. The reason is that the actual weight is not stable. This quantity varies by location in the universe because it depends on how much gravity you are experiencing.
For example, if you weighed 100 Newtons (N) on Earth, you would weigh only about 17 N on the Moon. The reason is that on the Moon, you only experience 1/6 of the gravity on Earth. If the blue planet’s gravity halved, you’d probably be half as heavy as before. That only happens when you’re alive and everything is fine on Earth.
However, the reduced gravity can bring many health problems . The body is always working to resist gravity, muscles still have to “deal” with this force even when you stand still. The bones have to support your weight, and the weight is affected by gravity. The heart also has to fight gravity to pump blood around the body. With gravity and weight halved, the heart can become weaker, the muscles smaller, and even bone mass decreases. These are the problems astronauts face when in a state of weightlessness.
So when you’re halfway down, maybe the same things will happen, but to a lesser extent and as long as everything else stays the same.
If the force of gravity on Earth was really suddenly 1/2, many other things would change as well. One of them is the escape velocity . Because the Earth’s gravity is weaker, the escape velocity or velocity required to fly away from the Earth will decrease.