Monday, 5 December 2011

How to//Paper plane

- Airplanes can fly only when total lift is large enough to counteract their weight. 
- Gravity is a constant force that pulls the plane to the ground. 


*Research by looking at physics equations, similar theories- what is actually proven. 

Newton's law of universal gravitation

Every point mass attracts every single other point mass by a force pointing along the line intersecting both points. The force is proportional to the product of the two masses and inversely proportional to the square of the distance between them.

 F = G \frac{m_1 m_2}{r^2}\



  • F is the force between the masses,
  • G is the gravitational constant,
  • m1 is the first mass,
  • m2 is the second mass, and
  • r is the distance between the masses.

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