2007-04-25 03:07:43 · 5 answers · asked by vipsy 1 in Science & Mathematics ➔ Physics
It can't. If an object is moving in a circular path, then it is accelerating. Acceleration is change in either direction or speed/velocity, in a circular path you are constantly changing direction therefore accelerating.
2007-04-25 03:11:24 · answer #1 · answered by jcann17 5 · 0⤊ 1⤋
It depends on the frame of reference. If you consider angular acceleration in a rotating frame of reference, then the object can move with zero angular acceleration if the object is in motion and there is no torque acting on the object with respect to the motion.
In a translational frame of reference, or 3-D spacial, then circular requires acceleration since it is constantly changing direction with respect to the reference frame.
reference frames are a key concept in physics. Note that we treat motion in the presence of gravity as having a "rest" state, when in fact an object at rest on the surface of the Earth is flying through space in all sorts of dynamic motion if the frame of reference were placed on the Sun.
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2007-04-25 10:19:53 · answer #2 · answered by odu83 7 · 0⤊ 0⤋
The object doesn't move, its shadow will in the right lighting conditions.
2007-04-25 10:16:41 · answer #3 · answered by essex_reject77 3 · 0⤊ 1⤋
never, now why is that? it is alway changing direction and that is confusing and counter intuitive, but see the link
Unfortunately it probably won't help, but learn more
2007-04-25 10:13:06 · answer #4 · answered by Durai 3 · 1⤊ 0⤋
it must have a constant velocity/angular velocity.
2007-04-25 10:13:20 · answer #5 · answered by Mixed Asian 5 · 0⤊ 0⤋