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yuganes warman
Everything that has mass , posseses gravitational pull. We as humans do have mass, and thus posses gravitational pull too ? If so , do we posses tiny amount of gravitational pull ?
Reducing the distance increases g. And why would the constant be smaller? Doesn't the term "constant" give you a hint?Rithikha said:g=(G.m1.m2)/r^2
If you calculate the gravitational force (g) for everyday objects, the masses, distance are extremely small, not to forget the smaller constant. Hence, the resultant g is also very small and thus negligible.
I meant, the constant is smaller compared to the masses. Why do you think I mentioned the value if I didn't know that?A.T. said:Reducing the distance increases g. And why would the constant be smaller? Doesn't the term "constant" give you a hint?
The only part of your explanation that is correct, are the small masses. Also note that "g" usually refers to gravitation acceleration, not the force.
The constant has different units than mass. It doesn't even make sense to compare them.Rithikha said:I meant, the constant is smaller compared to the masses.
Then you should use "F" for force, not "g".Rithikha said:This is the gravitational force formula.
It's not clear how you can say "the force acting on the much smaller object is = to acceleration" when you also say "Force = mass * acceleration".quincy harman said:I thought that Force = mass * acceleration. So if something has very little mass and is accelerating towards an object the size of Earth at 9.8 meters per second2 then wouldn't you be able to say that the force acting on the much smaller object is = to acceleration?
You're right it makes no sense bahaha. Just thought about it.SteamKing said:It's not clear how you can say "the force acting on the much smaller object is = to acceleration" when you also say "Force = mass * acceleration".
F= ma and, for gravitational force, F= GmM/r^2 where "m" and "M" are the masses of the two objects. If we take m to be the "little mass" and M to be the "larger mass" then, for the smaller mass, ma= GmM/r^2 so a= GM/r^2. For the larger mass, Ma= GmM/r^2 so a= Gm/r^2. That tells us, first, that all objects, attracted by the earth, accelerate toward the Earth with the same acceleration, GM/r^2. At the same time, the Earth is accelerating toward the object with acceleration Gm/r^2 which is, of course, far smaller than GM/r^2.quincy harman said:I thought that Force = mass * acceleration. So if something has very little mass and is accelerating towards an object the size of Earth at 9.8 meters per second2 then wouldn't you be able to say that the force acting on the much smaller object is = to acceleration?
What about Einsteins thought experiment in which he said that if you're in a closed box and accelerating at 9.8 meters per second per second in space that you would not know the difference from standing on Earths surface?HallsofIvy said:F= ma and, for gravitational force, F= GmM/r^2 where "m" and "M" are the masses of the two objects. If we take m to be the "little mass" and M to be the "larger mass" then, for the smaller mass, ma= GmM/r^2 so a= GM/r^2. For the larger mass, Ma= GmM/r^2 so a= Gm/r^2. That tells us, first, that all objects, attracted by the earth, accelerate toward the Earth with the same acceleration, GM/r^2. At the same time, the Earth is accelerating toward the object with acceleration Gm/r^2 which is, of course, far smaller than GM/r^2.
However, force is NEVER "equal to acceleration". They are different kinds of "things" with different units so never "equal". (For mass, say, 1 kg, the acceleration and force, in the MKS system, will have the same numerical value but still are not "equal". "2 meters per second" is NOT the same as "2 kilogram meters per second".)
You would observe the same forces and accelerations in both cases. That doesn't make force equal to accelerationquincy harman said:What about Einsteins thought experiment in which he said that if you're in a closed box and accelerating at 9.8 meters per second per second in space that you would not know the difference from standing on Earths surface?
Gravitational pull is the force of attraction between two objects with mass. On Earth, this pull is what keeps us grounded and gives us weight. Without it, humans would float away into space.
Gravitational pull varies based on the mass and distance of a planet. The larger the mass of a planet, the stronger its gravitational pull. For example, the gravitational pull on Earth is about six times stronger than on the moon.
Stronger gravitational pull can have a greater impact on bones and muscles, causing them to adapt and become denser. On the other hand, weaker gravitational pull can lead to muscle atrophy and bone loss.
Gravitational pull affects our daily activities in many ways. It allows us to walk, run, and jump on the ground. It also affects our balance, coordination, and even digestion. In space, where there is little to no gravity, these activities are altered significantly.
As long as we are on Earth, we will always experience the effects of gravitational pull. However, in space, astronauts can experience microgravity, where they may feel weightless due to the absence of a strong gravitational pull. But even in space, the gravitational pull of larger bodies, like planets and stars, will still have an impact on humans.