Talk:Non-uniform circular motion
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Bad information[edit]
A lot of the information here seems to be incorrect. The normal force should always be orthogonal to the surface providing the force, hence its name. In the three o'clock position, the diagram shows the normal force to be directed downwards, when it should be parallel to the ground. The article claims that the vertical component of this normal force somehow counteracts the weight force, even though they are both pointing in the same direction.
It is important to note that in non-uniform circular motion, the net force is not always equal to the centripetal force. The centripetal force is always directed towards the centre, while the net force is usually on an angle. Perhaps these problems could be avoided by using a mass on a string being swung vertically in the diagrams instead. This way, it would be made obvious that the tension always runs along the string, not at a downwards angle. — Preceding unsigned comment added by 220.237.17.171 (talk) 03:09, 7 June 2012 (UTC)
Assessment comment[edit]
The comment(s) below were originally left at Talk:Non-uniform circular motion/Comments, and are posted here for posterity. Following several discussions in past years, these subpages are now deprecated. The comments may be irrelevant or outdated; if so, please feel free to remove this section.
| The article contains false information, particularly on its description of Normal force of an object traveling inside a loop-the-loop. It contains redaction errors as well. For this reason I rate this article as a stub --129.116.51.101 (talk) 09:25, 20 February 2008 (UTC) |
Last edited at 09:25, 20 February 2008 (UTC). Substituted at 01:26, 30 April 2016 (UTC)