Universal Gravitation.I don't get this stuff . easy 10 points for physics people.?
1)wo masses (8.645x10^3 kg and 1.23*10^3 kg) are separated by a distance of 1.70x10^0 meters. What is the force of gravitational attraction between these masses?
2)If the force of gravitational attraction between two masses is 1.10 Newtons, what will the force become if mass 1 replaced with 2.1* mass 1 and mass 2 is replaced with 1.2*mass2 and the separation is decreased to 1/3 the original amount?
3)If the mass of a small asteroid is 1.52*10^16 kg and it's radius is 1.9 km, what would the gravitational field strength be on the surface of the asteroid?
4)A cartoon characer, Space Hero, is orbiting 20.0 m above the surface of an asteroid, which has a mass of 5.32 x 1014 kg and a radius of 604 m. How fast does the mini-spaceship have to be travelling?
5)If a 3.00 kg object weighs 3.56 newtons at a point in space, what is the gravitational field strength at that point.
Is it that hard to do your own homework?
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