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Newtonian mechanics discusses the movement of classical bodies under the influence of forces by applying Newton’s three laws. For more general concepts, use [classical-mechanics]. For Newton’s description of gravity, use [newtonian-gravity].

1 vote
1 answer
1k views

Why do concrete surfaced bridges make high pitched sounds when driven over? [closed]

Is it the grooves cut in the surface or just something in the concrete? It's not just bridges; it's concrete surfaced roads too, but bridges are usually louder. I've also noticed in some states they a …
Sagierian's user avatar
  • 303
2 votes
2 answers
1k views

An object is being swung around in a circle, attached by a string. If the string breaks, doe...

If an object attached to a string is being swung around in a circle, then when the string breaks, the object will continue in a straight line at a constant velocity, per Newton's First Law. If I under …
Sagierian's user avatar
  • 303
0 votes
2 answers
94 views

Does general relativity predict different forces on aircraft than Newtonian mechanics?

When taught how airplanes fly, we are probably always given the Newtonian mechanism: that four forces act on an airplane; lift and weight on the vertical axis, and thrust and drag on the horizontal ax …
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  • 303