All Questions
Tagged with classical-mechanics energy-conservation
32
questions with no upvoted or accepted answers
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Conceptual Difficulty About Work
So my issue is best explained with an example.
Let us consider a ring of mass $m$ and radius $R$ sliding down an incline of angle $\theta$ ($I = mR^2$). It starts from a height h, and we wish to ...
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514
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Phase plane of simple pendulum
I'm trying to create a phase plane of simple pendulum motion by plotting $\dot\theta$ against $\theta$ in Matlab. I have the equation $\ddot\theta + \sin\theta = 0$, then by integrating I come to the ...
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Does A Pivot Exert A Force
On a frictionless horizontal table, a uniform stick is pivoted at its middle, and a ball collides elastically with one end, as shown in Fig. 8.10. During the collision, what are all the quantities ...
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Ways of losing energy of a bouncing objects in vacuum other than Heat and Sound
When we released a bouncing object in a vacuum chamber, the object will fall, contact the ground of the chamber and bounce back up. We know that the object will not return to its original height ...
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Can kinetic energy be transferred between two objects even if they are not in contact?
This question is better explained with a thought experiment. It is inspired by this answer, stating that the amount of work done depends on the inertial frame.
Consider a one-dimensional space with ...
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Deformation of gradually applied load vs impact loads?
When a load P is applied gradually on an object, the work done on it is the average of the initial and final loads, which is generally P/2 multiplied by the deflection Δ1. In the case of impact load, ...
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Calculating impulse to frame from a flywheel and piston system
My question is related to a previous question, presented in 342655. I am taking the same scenario to ask a different question: In a flywheel and piston inertial system, how do you calculate the ...
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65
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Conservation of Energy with Chemical and Kinetic Energy of Moving Body
A rocket is moving relative to the earth such that it has $E$ joules of kinetic energy. The rocket contains fuel with $E$ joules of chemical energy. The mass of the fuel is negligible in comparison to ...
- 141
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Friction or not?
Say I have a differential equation in $\mathbb{R}^n$, Newtons Equation :
\begin{align}
\frac{d\gamma(t)}{dt}=&\dot{\gamma}(t),
\nonumber
\\
\frac{d\dot{\gamma}(t)}{dt}=&-\...
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38
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To find the angle of slipping of a falling coin
In an attempt to predict the outcome of a toss, I dropped a coin with its edge just touching another sharp edge as shown in figure. (The edge is flat and sharp with very less friction as in case of a ...
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Confusion About Conservation Of Energy When Analyzing This Experiment
The video here shows a clear demonstration of conservation of angular momentum. Given the experiment is performed within an isolated system, these are my thoughts:
The spinning bike wheel continues (...
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Angular momentum conservation during motorbike jump - modelling
I have now found 2 ways of describing this phenomenon and I would like to know which way is correct or better:
When the rear wheel rotates, we can take a look at the angular momentum (around the ...
- 448
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416
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How to calculate velocity of an object at the bottom of a circular hill if there is an energy loss due to friction?
Object slides down a circular hill and loses some of its initial mechanical energy due to friction. As an object slides down, friction increases and force in direction of motion decreases until the ...
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635
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Block Sliding on a Wedge: Conservation of Energy
I have a question regarding a physics problem where a block is sliding down a wedge (which can be seen here). All of the solutions I've seen to this kind of problem involve the conservation of the ...
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How Conservation of energy due to time symmetry appears in lever system?
Consider a lever or a machine which acts as a force multiplier in that case we do the same work or create a greater force by moving a smaller distance how the idea of conservation of energy due to ...
