- #1
tianyi.tan
- 3
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Hello.. some stuff from my tutorial I'm confused about, pls help! thanks:)
1) Why does the moon not fall and hit the earth? Since both exert attractive forces on each other, there should be some kind of acceleration towards a common point.. ><
2)When the Earth and moon are held at rest at their present separation and released to move, would the moon orbit the earth? Or would it then fall to the earth?
3) "Despite its mass and size, a typical neutron star can rotate about its own axis at a high speed. What is the fastest rate of rotation of a neutron star such that matter still remains at its surface? Assume that the radius of the neutron star is 20.0km & its mass is 3.98 x 10^30kg." What concepts should I use to solve this problem? thanks :D:D
1) Why does the moon not fall and hit the earth? Since both exert attractive forces on each other, there should be some kind of acceleration towards a common point.. ><
2)When the Earth and moon are held at rest at their present separation and released to move, would the moon orbit the earth? Or would it then fall to the earth?
3) "Despite its mass and size, a typical neutron star can rotate about its own axis at a high speed. What is the fastest rate of rotation of a neutron star such that matter still remains at its surface? Assume that the radius of the neutron star is 20.0km & its mass is 3.98 x 10^30kg." What concepts should I use to solve this problem? thanks :D:D