If you were in a spaceship annd launched a cannonball into frictionless space, how much force would have to be exerted to keep it going?
2007-01-06 12:35:15 · 2 answers · asked by blah 3 in Science & Mathematics ➔ Physics
None - if there is no friction, the cannonball will keep going at the launch speed.
2007-01-06 12:38:10 · answer #1 · answered by firefly 6 · 1⤊ 0⤋
A "centrifugal stress" could be a stress that acts right away remote from the middle. There are some information, yet actual there is not any such factor as centrifugal stress. What maximum folk think of of as centrifugal stress is quite an artifact of inertia. A "centripetal stress" is a stress that acts in the direction of the middle. Any merchandise that's moving in something different than a right away line - something that's curving, in different words - is experiencing a centripetal stress. in case you place a stone on a string and swing it around your head, the string is exerting a centripetal stress on the stone. The Moon is orbiting the Earth - the Earth's gravitational field is exerting a centripetal stress on the Moon. A automobile is going around a turn - friction from the line is exerting a centripetal stress on the tires of the automobile.
2016-12-12 05:41:01 · answer #2 · answered by ? 4 · 0⤊ 0⤋