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The moment of inertia, or rotational inertia, determines the torque needed for a desired angular acceleration about a rotational axis. Like inertial mass is the resistance to being linearly accelerated, the moment of inertial is the resistance to being rotationally accelerated.
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The dot product integral in the proof of the Parallel axis theorem
The first picture is a question about proving the Parallel axis theorem and the second is the solution. I have no problem with the solution except for the part which says that
$$
\int 2\vec h \cd …
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Two particles have the same linear momentum but their angular momentum differ. Which's harde...
Which one is harder to stop, a 2 kg particle moving in a circular path of radius 5 m , with angular velocity of 10 rad/s or a 2 kg particle moving in a circular path of radius 2 m with a angular veloc …