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Tagged with relative-motion rotational-dynamics
3
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Directions of static & kinetic friction?
Static friction :
Static friction opposes relative motion between two surfaces. The car is moving at some tangential velocity relative to the road. Thus, static friction should act in the opposite ...
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Angular momentum about a moving point
I was used to see the Angular Momentum Principle as:
$\dot{\underline{H}_O} = \underline{M}_O^{ext}$
that is, the change in angular momentum equates the external torque w.r.t. a point $O$.
Now, I'...
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Since Earth spins, would an aircraft travelling opposite to direction of Earth spin take less time? [duplicate]
Suppose we want to reach the point on earth which in relative terms is exactly on the opposite end of the sphere we call earth (I know it is not an exact sphere).
We either dig vertically downwards, ...
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