Questions tagged [rotational-kinematics]
A tag for questions about rotational motion, including angular velocity and angular acceleration.
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Can one force both rotate a body around an axis and also cause translation?
If a solid cylinder is rolling without slipping down an incline, and the force of friction is applied tangentially to the edge of the cylinder in the opposite direction as torque.
However, I do not ...
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How to model a star tracker measurement in quaternions
I'm trying to design an attitude determination system for a cubesat using an extended kalman filter.
To implement the kalman filter I need to model the measurement from a star tracker which outputs ...
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Statics: What it means if a rope snaps
There is a drawbridge that is held up by a hinge attached to a vertical wall on one side, and by a vertical rope on the other side. Say a horse starts walking from the wall towards the rope and at a ...
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Rotation down a plane problem
I need help with calculations, here is what I have:
I rolled a ring down an inclined plane.
I have the time it takes to roll one revolution (2pi).
It started at rest.
I have the mass of the ring.
...
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1
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Pulley system with gear - torque
I would like to ask, how can I calculate torque required for motor in this system if:
input pulley is smaller one (number of teeth= z1)
output is larger one (number of teeth= z2) with pinion (modul= ...
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How does the rod's centre of mass change while falling?
Which force displaces the rod's centre of mass? The body is rigid and surface rough. And how can we apply conservation of energy in calculating angular velocity in presence of friction?
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Why does no slipping occur when a particle is attached to a string, which is wound onto a circular disk, and the system is allowed to move?
In this question, the only way we can find the angular acceleration of the disc is by equating it to the linear acceleration of the particle divided by the radius. But this holds only if the string ...
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Could one calculate the relative speed of the Sun viewed from the Earth?
From point of view from the Earth it seems that the Sun is making an orbit around the Earth. Of course this is not right, the Earth orbits the sun and the Earth rotates on his axis. But is it possible ...
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Tangencial Velocity along a circle with angular acceleration
Suppose a particle walks a circle's perimeter from $0$ to $\tfrac{\pi}{2}$. Its vertical velocity is $V_{1}$, constant. Its tangential speed increases as a function of theta and $V_{1}$.
Given $V_{1}$...
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Magnitude of Normal Force in Circular Motion
In the above diagram an object is in vertical circular motion.
At $T_0$ the object is at pos1, and at that position, I have shown the forces resolved. So $F_n-mg\cos(a)$ is the centripetal force ...
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Motion in Rotating vs. Ground frame
Let us imagine a rotating platform moving with speed $\omega$, and let us assume that this platform is non-frictional. So if we are placing an object in the platform and looking at it from the ...
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How to get radius of trail with velocity and angular velocity?
If I know the velocity of something and the angular velocity of something, how could I figure out the distance between the object and the center it is rotating at?
I just need an equation for the ...
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