Questions tagged [rotational-dynamics]
A tag for questions about the mechanical interactions of rotating objects, including torque and angular momentum.
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How does the moment of inertia work in this physics question? (Vibrations and Waves by George C. King) [closed]
Not sure if this is just me having a moment where I'm missing something totally obvious, but I'm going over some old undergraduate physics work to reinforce my knowledge, and I've encountered a step ...
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Calculating the amount of torque applied to to stop a rod rotating at some angular velocity
Consider a Rod AB, having length $l$ with non uniform mass density $\lambda (x) $ a function of length from the end A, is rotating at an angular velocity $\omega$ with fixed end A and free end B. ...
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Implicit definition of internal forces through choice of dynamical description of a rigid two mass pendulum
The central mass theorem states that the center of mass of a N-body system moves as if all external forces acting on the bodies of the system acted directly on the center of mass, it is a generic ...
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Rolling ball on a surface with friction
For a point particle moving on a surface under the infuluence of gravity, the equation of motion is very easy to write down - the force on the particle is simply the projection of its weight $mg\...
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Dragging a homoegenus cylinder without slipping [closed]
We drag a homogeneous solid cylinder of mass $m$ along a horizontal surface, which rolls without slipping. What is the acceleration of the center of gravity? On the sketch, draw the directions and ...
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Coriolis force on a particle moving on sphere
Consider a particle moving on a rotating disc, as shown below. The direction of the Coriolis force acting on the particle can be found using the cross-product of the angular velocity vector and the ...
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Do off-centre forces create additional energy?
When a force is applied to a rigid body at its centre of mass, it accelerates. Over time, that acceleration becomes velocity, which gives the body a certain amount of kinetic energy.
However, if that ...
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