Questions tagged [rotational-kinematics]
A tag for questions about rotational motion, including angular velocity and angular acceleration.
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Foucault pendulum, where did I go wrong?
I wanted to approximate the number $N$ of periodes needed, such that the foucault pendelum turns one time. Though my result is off by the factor 2 of the results I found.
What I did: I assume the ...
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Translational acceleration due to rotation
Sorry for boring you, my friends. I am haunted by re-deducing an expression of translational acceleration in ANSYS theory reference about acceleration effect. It takes the form of:
$$\lbrace a_t^r \...
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How Burmester's theory converts rotary motion of the crank to linear movement?
I have been studying the mechanism of Klann's Mechanical spider and there it was written that by Burmester's theory it converts rotary motion of the crank to linear movement. I tried searching but how ...
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Why did Feynman tell "we cannot locate earth's angular position, but we can tell that it is changing"?
I was reading "Symmetry in physics" by Feynman, where he wrote:
If we perform sufficiently delicate experiments, we can tell that the earth is rotating, but not that it had rotated. In other words, ...
user36790
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Would a large, small mass object in orbit experience induced rotation
Imagine a large (multiple earth radii), very small-mass ring orbiting The Sun. Half of the ring would be closer to The Sun than the outer half. Since orbital velocity decreases with distance, two free ...
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Rotating Tank of Charged Liquid
Consider a long rectangular tank of dimensions a×b, where a≫b, that is rotating at a constant angular velocity and filled with an incompressible charged fluid. How would one find an equation ...
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Angular velocity versor
I am going back through the definitions of good old Euclidean vectors and trajectories to see whether when i was younger i missed important concepts.
In my notes, and reference book, i found that for ...
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How is momentum conserved in this collision with loosely-connected spheres?
There are three identical spheres. B and C are loosely connected with a light inextensible string, and A approaches B directly at some initial velocity $v$. There is no angular momentum.
A and B have ...
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Should the rotary vane damper torque be less than the load torque?
The rated torque of a rotary vane damper should be less than or more than the load torque?
In my opinion, if the rated torque is greater than the load torque of the damper, then I believe my ...
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Assistance in writing the rotational constraints of a spool, in rotational dynamics
I came across a very interesting problem involving rotational dynamics, from the series of Cengage Physics books, which was asked in an Indian competitive exam called KVPY.
Write the constraint ...
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Calculating $C$ in $I_{CM} = CMR^2$
I am a bit new here, so please excuse any errors I might make.
I am a student in an AP Physics C: Mechanics course and I am conducting an experiment where I am experimentally calculating the C values ...
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Textbook problem - Struggling with polar coordinates
Recently I am self-learning "Introduction to classical mechanics" by David Morin. There is a problem in chapter as stated below:
Walking east on a turntable
A person walks at constant speed ...
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Acceleration in rotating frame
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9.5.3 Velocity and Acceleration in a Rotating Coordinate System
Applying Eq. (9.8) to the position vector $\vec{r}$, we have
$$\...
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How translation, rotation and translation plus rotation of a body can be define particle by particle?
Let use simple example, a uniform rod with center of mass (COM) at the center of rod. The rod is in free space there are no other forces acting on it.
If we apply single force acting on a particle at ...
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What does tangetial velocity change during Conservation of Angular Momentum
Lets say that a particle connected to a string is rotating about an axis O with a uniform tangential velocity of u. Then, the string is pulled towards the axis to decrease its radius (say from r1 to ...
