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Results tagged with newtonian-mechanics
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user 26122
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].
4
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answers
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What is happening in this video of a hamster running?
The forces acting in this charming video of a hamster running don't make sense to me so I thought I'd bring it here. It's very unusual indeed, but hopeful it spreads a little bit of entertaining criti …
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3
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2
answers
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Newton's third law does not apply to the kinetic energy formula?
Here is a classic problem:
A 60kg boy and a 40kg girl are sitting in front of each other on skateboards on a frictionless horizontal surface. The boy pushes the girl and the girl gains a velocity …
- 1,239
4
votes
1
answer
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Is my textbook teaching an incorrect concept of Work?
I fear my textbook is teaching an incorrect concept of Work. I am very frustrated right now since I was struggling to understand the concept in the way that was explained in the textbook and my instin …
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3
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2
answers
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Relative wind velocity explanation
I am having trouble understanding the reasoning behind the solution in this Irodov General Physics problem:
problem 1.6.) A ship moves along the equator to the east with velocity
$v_0=30\;km/h$. …
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Looking for an intuitive understanding of normal force
I understand normal force to be the perpendicular force to a surface of contact. However, I have come across a problem which has caused me to rethink this.
My initial understanding of force is demon …
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0
votes
1
answer
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Investigation of a pendulum's period, problem creating equation to sum the dynamic velocity
I am investigating the period of a pendulum swing. This is a simple harmonic pendulum and I am already aware of the common, but slightly inaccurate,
$2\pi \sqrt{\frac{L}{G}}$ formula.
My problem is …
- 1,239
0
votes
1
answer
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Minimum separation distance between two masses cushioned by a spring [closed]
I think this problem is much more difficult than what I've learned so far.
B) is the problem I'm having a hard time with. I think it is much more difficult to consider because as the red object …
- 1,239
1
vote
3
answers
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When is energy conserved in a collision and not momentum?
Consider the following example:
A bullet of mass 45g is fired at a speed of 220 m/s into a 5.0 kg sandbag hanging from a string from the ceiling. The sandbag absorbs the bullet and begins to swing …
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