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A tag for questions about the mechanical interactions of rotating objects, including torque and angular momentum.
2
votes
2
answers
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Work-Energy Theorem but Work is $F.S_{COM}$ (Extended)
From the definition of Work Done, we know it is $\vec F . \vec s$ , where $\vec s$ is displacement of point of application of force.
Everything was alright until I read these texts from Kleppner and K …
1
vote
3
answers
162
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Why does a ball tied to a spring move outwards when rotated (ground frame)?
Suppose a bob or a ball is tied to a spring which in turn is pivoted to a certain point on a table as shown, if the ball is given velocity $v_o$ perpendicular to spring it moves in circular motion an …
2
votes
1
answer
236
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At what $ω$ would the dust particles fly off the tilted rotating disc?
I've been struggling with question below:
"A metal disc of radius R can rotate about the vertical axis passing through its centre. The top surface of the disc is uniformly covered with dust particle …