How heavy is the earth? is population of human,trees, animal,or everything on it affects its weight?

Answer 1

Weight is a force, which is mass times acceleration. On earth, as has been said, weight is equal to something's mass times acceleration due to gravity, and it is measured in Newtons (N).

If you calculate the earth's centripetal acceleration with regards to the sun and multiply by the estimated mass, which is 5.98x10^24kg, you get a force of 3.55x10^22 N. I suppose you could consider this a "weight".

Weight changes when acceleration changes. Mass stays the same regardless of acceleration.

Answer 2

The calculated weight is 5.978 sextillion metric tons, or 5,978 followed by 18 zeros.

The 'Does the population of humans/ect' question effect its weight is more difficult to answer. In my view the weight of the earth would include everything on it. As a tree grows it does fix elements out of the air, and to a lesser extent from the ground below it. So in one sense the tree gains weight and the earth loses a small amount. But when the tree dies it decomposes and that weight returns to the earth. So the weight gained and lost is fixed when viewing the population of the planet.

Now where the earth can change in weight is dues to influences from outside the planet. A meteor hitting the planet will add some small weight to the planet, while any upper atmosphere lost to solar winds will cause a loss in weight to the total system.

Answer 3

This is a non-sense question, how heavy in regards to what? When measuring weight on the Earth we compare at the force of gravitational attraction between the Earth and whatever we are weighing. Since the Earth is so much more massive than anything we are weighing it is a good way of comparing things. If you ask how heavy the Earth is in regards to the sun then you have a good question. A better question would be to ask how massive the Earth is.

Answer 4

Heavy = Mass (see above).

Is the human population etc ('bio-mass') part of this 'weight' (mass) ? - well yes of course it is .. but I would expect the total bio-mass to be less than the measurable error.

To get this into perspective, drive a stake into you front lawn. Now tie a string to the stake and walk 100 yards up the road. Using blackboard chalk attached to the string, draw a 100 ft. circle (OK, draw part of a circle = you get the idea).

The chalk line - that's the Earths crust. Get down on you needs at look at the chalk line. See the dust ? That's us.

Now ask, how significant is the dust to the 100 ft Earth ?

Answer 5

Where would you put the giant scale to weigh it on ?? And does the scale weight count too ???