Questions tagged [torque]
This tag is for questions regarding to torque, which is a measure of the increase in angular momentum over time.
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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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Shear stress of a suspended sphere in a viscoelastic fluid
What I am trying to solve right now is that I have a magnetic particle (nanoparticle to be exact) floating in liquid that is viscoelastic and apply sinusoidal magnetic field. The applied magnetic ...
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Confusions in conservation of angular momentum and torque
Say someone is on a spinning object with heavy weights in his hands. He then pulls those heavy weights to himself and then the total angular speed is faster. We can explain this with conservation of ...
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Why can we treat a ball as a point mass to calculate torque?
A sphere of radius $R$ is supported by a rope attached to a wall as shown in the below figure. The rope makes an angle $\theta$ with respect to the wall. The point where the rope is attached to the ...
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Assistance in Francis Turbine Lab Experiment
Lately I did Francis Turbine Experiment at my institute. The objective was to find the efficiency of the turbine. Power input was found using flow rate and pressure gauge. Power output was found by ...
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What happens if we prevent gyroscope to precess?
If we apply some torque to spinning wheel in a vacuumed space in body frame y axis, wheel try to precess due to gyroscopic effect but it will be prevented by obstacles as seen from picture,
what will ...
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Torque of centripetal force
Suppose there is a particle of mass $m$ attached on the rim of an accelerating wheel. At any particular point, there should be a centripetal force passing through the IAOR, will this force apply ...
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Determining Equivalent Point Forces for a Rigid Body Given Net Force and Torque [closed]
Consider a rigid planar body subject to a force field, such as the gravitational interaction between polygons in a 3D space described in this question.
Given:
The net force acting on the rigid body
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Finding the state space representation of a dynamic model with the force and angle as control inputs vector
I am trying to design a controller to control the angle of the force on my mobile rigid body. I some questions:
I am not sure how to write the state space representation with the force, $F$ and angle,...
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Buoyant force on a stick making an angle theta with the vessel
I was solving this question
The answer of the question uses balancing of torques.
It uses $L=0.5$m
I have problem with the fact that they have used buoyant force $F = \rho V g$. Marking the net ...
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Friction between two horizontal rotating discs
Let's say we have two rotating disks and one disk is given some angular velocity. As one disk rotates, due to friction the other disk should rotate as well. The two disks are completely identical (...
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Confusion regarding torque and calculating linear/angular acceleration of an object when a force is applied a distance from its center of mass?
From what I have read/learned about torque, it appears that it is derived based on the idea that applying a force farther from a point about which an object rotates increases the rotational force ...
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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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Are the ideas of angular velocity, angular acceleration, angular momentum, torque, etc only helpful for rigid bodies?
For rigid bodies, all the particles can have different linear velocities but the same angular velocity, so it makes it convenient to talk about the angular velocity instead. From there, we get to ...
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Calculating vehicle and tire acceleration with tire slipping
I'm attempting to simulate the motion of a vehicle with $N$ tires and I'm running into some trouble deriving forces/acceleration when adding friction and tire slipping into the picture. Here's an ...
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