"what is the total weight of the world"?
815939
Not sure I understand your question....\nThe total mass of the earth is 6x10^24 kg.\nThe total human world population is about 6.6 x 10^9. Assuming an average weight of 50 kg, this give a total human mass of 3.3 x 10^11 kg, far smaller than the earth.  \nThe total biomass (all plants and animals together) is estimated here\nhttp://en.wikipedia.org/wiki/Biomass\nat about 2x10^15 kg, still 9 orders of magnitude smaller than the mass of the earth.
1091336
Things would weigh less than on earth\n\nst
353194
Well, there are fewer than 10 billion people and the average mass is less than 100kg, so the total mass of people will be less than 1 trillion kg. This is 10^12 kg. The mass of the earth is about 6*10^24 kg, so the total mass of people is less than one 6 trillionth of the mass of the earth. Not a huge effect.
1041394
Actually, the term "weight of the earth" has no real meaning.  The mass of the earth can be calculated, but weight and mass are not the same thing.  Weight is usually used to express the apparent mass of an object in the Earth's gravitational field at the planet surface.  To speak of the Earth's weight is to try to speak of the Earth's apparent mass in relation to itself and its own gravitational field.  It's like asking how far a point is from itself.  It has no meaningful answer.  If your science teacher put this question to you in terms of weight instead of mass, they should go back to coaching PE or something.
101436
The mass of the Earth is roughly 5.9742 E24 kilograms.\n\nWhy the need for such an accurate number?
214139
Here is a calculator to find you weight on other planets/moons/stars,\nhttp://www.exploratorium.edu/ronh/weight/index.html
781957
Approximately the mass of 2 billion solar masses.\n\np.s. Weight is a function of something in a gravitational field, what you really are asking about is mass.
83656
You just gave the answer. If he weighs 200 pounds on earth he would weigh 200 pounds on this planet.
22095
Let's try to anser the question without looking it up and without using a calculator.\n\nWe know Newton's gravitation law: F = G*m*M/r^2\nAnd we know the gravity on earth: F = m*g\n==> m*g = G*m*M/r^2\n==> M = r^2*g/G\nNow, the acceleration on the earth surface is approximately 10 m/s^2\nThe earth's radius is approximately 6*10^6 m\nAnd I remember G to be approximately 7*10^-11 Nm^2/kg^2\n\nM = 6^2*10/7 * 10^12/10^-11 kg\n\nThe earth weights about 5*10^24 kg\n\nIf you look it up in Wikipedia, it says 5,9736*10^24 kg. \n\nSo we're close enough if you take into account that we used rough estimates for the constants.
789846
The preceding first, third, and fourth answers are correct. Additionally, you should multiply the units, and remember that  (1 kg) × (1 m/s²) ≡ 1 N. Then…\n\nOn the moon, 80 kg × 1.62 m/s² = 129.6 N and \non the earth,  80 kg × 9.80 m/s² = 784 N. \n\nAnd check your spelling of "weigh."
344744
I went to Nasa's website, which has an explanation about this. I calculated it out and it turned out to be 145 pounds, rounded to the nearest pound. I myself do not exactly understand the equation fully, but I do understand the concept. Hope this helps!
331061
'Weight' is actually the wrong term since it describes 'mass multiplied by the force of gravity', what you are probably referring to is the 'mass' of earth.\n\nThe earth is not an entirely closed system, so its mass would have changed over history, if only in insignificant quantities. Such as space shuttles leaving, meteors hitting earth and other such external influences.\n\nDestruction of earth such as nuclear explosion would NOT result in any change in mass though, merely a change in state.
665122
mass of Earth = 5.9742 × 1024 kilograms
537369
If your mass is m, multiply it by g to convert it to N, where, g is the acceleration due to gravity of the place where you currently are.\nFor most of the places on earth, we take the average value of g = 9.81 (m/s)/s.
681101
5.98 sextillion metric tons\n\nEarth's Weight (Mass): 5.972 sextillion (1,000 trillion) metric tons. That's 5,972,000,000,000,000,000,000 tons! Actually, scientists prefer to refer to this measurement as the Earth's mass instead of weight since weight is the result of Earth's gravitational pull on another object. And the Earth cannot pull on itself! As the Earth orbits the Sun, it is weightless. If the Earth were placed on the Sun, it would weigh more than if it were placed on Jupiter, the largest planet in the solar system but much smaller than the sun. Yet, Earth (or any other object for that matter) would have the same mass regardless of where it is located.\n\nAge: About 4.5 Billion Years Old\n\nDistance from the Sun (average): About 93.1 million miles (also one Astronomical Unit or AU). It is the third planet from the Sun.\n\nFarthest Distance from the Sun: 94.5 million miles.\n\nClosest Distance to the Sun: 91.4 million miles. \n\nSpeed through Space (around the sun): 18.4 miles per second or about 67,000 miles per hour.\n\nSolar Orbit: It takes Earth 365.2422 days to orbit the sun. This is the basis for the year. \n\nRotational Speed: About 1,070 miles per hour at the equator.\n\nRotational Time: It takes the Earth 23 hours, 56 minutes and four (4) seconds to make one complete 360° rotation.\n\nRotational Tilt: 23.5° on its axis, a straight line through the planet from the North Pole to the South Pole. The tilt is in relation to Earth's near circular orbit around the sun.\n\nEarth's Size, Distances & Surface Features\n\nEquatorial Diameter: 7,928 miles\n\nPolar Diameter: 7,901 miles\n\nCircumference: 24,907 miles\n\nSurface Area: 197 million square miles\n\nHighest Point: 29,028 feet above sea level, Mount Everest, formed 60 million years ago, located on the border of Tibet and Nepal in the Central Himalayas in southeast Asia.\n\nLowest Point (on Land): 1,320 feet below sea level, Dead Sea, located on the border between Israel and the West Bank to the west and Jordan to the east. It is so salty -- the saltiest on Earth -- that it is unable to support any type of life.\n\nDeepest Point on Earth: 35,802 feet, Mariana Trench in the Pacific Ocean. The water pressure there is over eight tons per square inch.\n\nEarth's Vital Systems & Elements\n\nSurface Data: 70% covered by water, with the remaining 30% composed of the seven continental land masses.\n\nWater Composition: 97% salt water, 3% fresh water (only .3% of all water is usable by humans).\nTotal Water Supply: About 326 million cubic miles. \n\n~ Oceans: 317 million cubic miles\n\n~ Ice Caps, glaciers: Seven (7) million cubic miles\n\n~ Ground water: Two (2) million cubic miles.\n\n~ Fresh Water Lakes: 30,000 cubic miles\n\n~ Inland Seas: 25,000 cubic miles\n\n~ Soil Moisture: 16,000 cubic miles\n\n~ Atmosphere: 3,100 cubic miles\n\n~ Rivers: 300 cubic miles (Almost all of humans' drinking water comes from rivers.)\n\nAir Composition: 78% nitrogen, 21% oxygen, 1% other content (including greenhouse gases). The element Argon makes up about 93% of the other content, with carbon dioxide - the primary greenhouse gas, accounting for a little over 3%. Argon is an odorless and inert (inactive) gas that is commonly used in incandescent and fluorescent light bulbs to protect the filament. \nGreenhouse Effect: Vital to maintaining Earth's climate and life-sustaining warmth. The Sun's heat is trapped within Earth's atmosphere by the greenhouse gases, mostly carbon dioxide, which enters the atmosphere through the planet's natural carbon cycling and increasingly from human-caused pollution. The increase of carbon dioxide gases in the atmosphere is believed to have caused the Earth's average temperature to rise from 60°F to 61°F in the last few decades.\nEarth's Chemical Composition: \n~ Oxygen: 46.6 %\n\n~ Silicon: 27.7%\n\n~ Aluminum: 8.1%\n\n~ Iron: 5%\n\n~ Calcium: 3.6%\n\n~ Sodium: 2.8%\n\n~ Potassium: 2.6%\n\n~ Magne
183061
1/6 of earths weight, 400/6 =66.67 lbs
89908
Yeah, if you think about it, there is really no way to "add" weight to the earth unless it comes from another planet or moon.  Everything on earth at some point was derived from existing matter.  This is a rule of nature.  Matter cannot be created nor destroyed!