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Results tagged with newtonian-mechanics
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user 552
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].
6
votes
Height of Water 'Splashing'
Indeed, this seems to be very complicated problem.
But let's throw away all this complexity and concentrate
in the core of the phenomenon.
So consider an ordinary stone with volume $V$ that falls in …
- 2,717
1
vote
Block Sliding Down Hemisphere
We can solve this problem easily by using only the law of conservation of momentum and the law of conservation of energy.
It is obvious that in given case only the horizontal component of the momentu …
- 2,717
7
votes
Is two cars colliding at 50mph the same as one car colliding into a wall at 100 mph?
I think that it makes sense to move away from the specific walls and cars and consider simply an inelastic collision on of two masses, $m_1$ and $m_2$. Otherwise we get stuck in the details.
When …
- 2,717
2
votes
Accepted
Boy and box on ice
Let's denote:
$\mu_1$ (boy's slip ratio)
$\mu_2$ (box's slip ratio)
$m$ (boy's mass)
$M$ (box's mass)
$F$ (pulling force of the boy)
$\alpha$ (the angle of the rope to the horizon)
Then
1) T …
- 2,717
0
votes
How does one calculate the force applied on an object by a magnetic field?
I am consider Scenario One:
For given ball and magnet the magnitude of the interaction force between them, depending on the distance $x$, follows the formula:
$$F=\frac{const}{x^7}$$ where $cons …
- 2,717
0
votes
Slingshot Projectile motion calculation
I had a similar school science project a long time ago. Fortunately, this project has left me notes. Let me share an interesting case where there is a closed form solution:
This is the projecti …
- 2,717
1
vote
Rotation angle of a giant water lily when a child crawls on its rim
ftiaronsem is right, i think!
The law of conservation of angular momentum for this system must be expressed as $I_m\omega_m+I_M\omega_M=0$ where $I_m$ and $I_M$ are the moments of inertia of the c …
- 2,717
25
votes
6
answers
2k
views
Rotation angle of a giant water lily when a child crawls on its rim
Below is a picture of Giant Water Lily. Scientific Name: Victoria Amazonica. Leaves of some of these could be as big as 3 m diameter and carry a weight of 45kg spread evenly and can support a child. N …
- 2,717