- #1
allok
- 16
- 0
hiya
Circular motion is really confusing
Force perpendicular to velocity is said to change only velocity's direction but not its magnitude. But how about object orbiting the earth? If object orbits the Earth then force of gravity is perpendicular to it and thus is said it only changes its direction.
Ok, so perpendicular force only can change direction of velocity because it doesn't have any components parallel to velocity. But:
if you break velocity vector of an orbiting object in components ( at any point on its path ) and also break force of gravity into components, then it becomes obvious that force of gravity always has component parallel to some comonent of object's velocity vector and as such it never really is perpendicular to velocity.
I need a little help people
thank you
Circular motion is really confusing
Force perpendicular to velocity is said to change only velocity's direction but not its magnitude. But how about object orbiting the earth? If object orbits the Earth then force of gravity is perpendicular to it and thus is said it only changes its direction.
Ok, so perpendicular force only can change direction of velocity because it doesn't have any components parallel to velocity. But:
if you break velocity vector of an orbiting object in components ( at any point on its path ) and also break force of gravity into components, then it becomes obvious that force of gravity always has component parallel to some comonent of object's velocity vector and as such it never really is perpendicular to velocity.
I need a little help people
thank you