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Results tagged with newtonian-mechanics
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user 312787
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].
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Free space motion
I was going through Kleppner and got this interesting doubt. At page 138 there is an article named rocket in free space.So if there is no external force. The fuel can expand rapidly or slowly without …
- 49
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Gradient of kinetic energy
I have got very silly doubt. We know we can write force as:
$$\mathrm{Force}=-\frac{dU}{dx}$$
So why we can't write kinetic energy as
$$\mathrm{Force}=\frac{dK}{dx}$$
even though we get
$$\int F\cdot …
- 49