All Questions
Tagged with collision classical-mechanics
122
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Justifying that the gold nucleus is at rest in a Rutherford experiment
This is an example on the Rutherford Experiment from Young and Freedman's University Physics.
In the last paragraph of the solution the book states that it is valid to assume that the gold nucleus ...
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2
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Are Coefficients of Kinetic Friction Additive?
Question setup:
Say we have two blocks on a $30^{\circ}$ incline plane with masses $4\ kg (A)$ and $8\ kg (B)$.
The coefficient of kinetic friction between block $A$ and the plane is $0.25$, and that ...
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2
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133
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Is this equation for coefficient of restitution right? If so, why does it give the negative of the actual answer?
I have derived a formula for the coefficient of restitution, $e$, between two smooth particles, A and B, of fixed masses. I would like to confirm that it is generally true. Because it gave me the ...
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2d elastic scattering with an impact parameter
Hello guys I have homework that has tasked me with connecting the effect of the scattering parameter to the energy transfer in a 2d elastic collision of two arbitrary spheres with one of them standing ...
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Elastic collision between 2 particles in 2D [closed]
A particle with mass $m_1=m$ moves along the x-axis at a velocity of $v_0$ and collides with another particle $m_2=4m$. As a result of the collision $m_1$ travels upwards at an angle of $90 ^\circ$. (...
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Landau/Lifshitz "Mechanics" Particle Disintegration
I have attempted to derive Eq. (16.9) in Landau/Lishitz' "Mechanics", 3e. If someone could let me know if my derivation is on the right track, it would be greatly appreciated. I do hope that ...
- 349
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49
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Energy Loss of a Ball which Splits into Pieces
It is well-known that one can analyse the loss of kinetic energy when an inelastic ball falls and bounces back up from the ground in terms of the coefficient of restitution
$$E_f - E_i= \frac{K_i - ...
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Energy conservation and Lorentz invariants [closed]
In relativistic collision theory,How can we deduce energy is conserved by using Lorentz transformation?
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How to mathematically prove the balls move at equal speeds after an inelastic collision?
Consider a ball moving at a certain speed. It hits an identical ball at rest. After the collision, both the balls move at equal angles $\theta \ne 90^{0}$ (inelastic collision) with the original line ...
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1
answer
24
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Why is only vertical component of velocity affected by 'e' during inclined collisions?
So far, all the homework problems I've solved involving a ball colliding (elastically or not) with an immovable wall at some angle $\theta$ with the normal assume that momentum is conserved ...
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How do you calculate the time taken in a collision?
For example a car with a known speed and mass crashes with a completely unyielding wall. The car has a crumple zone, (and you know the modulus of the crumple zone) so it doesn't stop immediately, but ...
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Elastic collisions and internal degrees of freedom
As I was considering elastic collisions today a question popped into my head. Do elastic collisions imply that there are no internal degrees of freedom in the colliding objects which couple ...
- 133
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103
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Impulse-based reaction model
Im trying to create a collision simulation, for that im trying to understand the Impulse-based reaction mode item in the Collision Response article in Wikipedia, I know reading Wikipedia is not the ...
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Rods collision, determine angular velocity and velocity [duplicate]
The rods are moving twards each other in a velocity v1, and v2.
Assuming it will be a elastic collision, after it, how would I determine the velocity of the mass center of both bodies, and how would I ...
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Collision with extended bodies [closed]
In this situation, after the collision, how would I determine the angular velocity of both bodies, and how would I determine the velocity of C1, and C2?
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