Thursday, October 4, 2012

If all the people in China moved one inch to the left, would the world tip over?


Question


If all the people in China moved one inch to the left, would the world tip over?


Answer


China is left for those who are left. It was just a joke.Now lets consider this in different view pointsbrbrFirst Considering the Physics in the questionbrSecond Considering the PoliticsbrbrFirst brbrConsider thw whole earth as a huge ball. Lets find the mass of earth. By methods of Newton, Galileo and Erathothanese...brbrbrbrThis calculation is done using Newtons Law of Gravity, which formulates the attractive force gravitational force that two masses exert on each other brbrFGmMr brbrIn Newtons equation, F is the gravitational force, G is a constant of proportionality, M and m are the two masses exerting the forces, and r is the distance between the two objects. brG was calculated by Henry Cavendish in , and was determined to be . x mkg sec. brAlso needed is Newtons second law of motion, Fma, where F is the force applied to an object, m is the mass of the object, and a is its acceleration due to the force. brGalileo determined that the acceleration due to the force of gravity of Earth was a constant equal to . msec near the surface of the Earth. brLastly, you need to know the radius of the Earth this was first calculated by the Greek Eratosthenes thousands of years ago by comparing shadows in wells during the summer solstice about B.C.. brbrbrCALCULATING THE MASS OF THE EARTHbrbr. F GmMr ma, where F is the gravitational force, G is the gravitational constant, M is the mass of the Earth, r is the radius of the Earth, and m is the mass of another object near the surface of the Earth. brbr. GMr a The ms canceled out. Now solve for M, the mass of the Earth. brbr. M arG, where a.msec, r. x m, and G. x mkg sec. brbr. M . x . x . x brbr. x raised to kg brbrConsider the mass of million people moving to left to an inch wont alter minutest change to earthbrbrbecausebrbrits kgs is the mass of earth.brbrConsider an average of kg to million people.brIts only kgsbrbrbrSecondly brbrPolitics china is the largest communist country. And it has the second largest armed force Considering the no of people in army The first one goes to India. However communisum can cause huge developments But the people wont be much happier due to severe work and struggles. Refer the communist developments if Soviet Union.



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