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Apr
20
revised What is the minimal G-force curve in 2-dimensional space?
added 1787 characters in body
Apr
20
answered What is the minimal G-force curve in 2-dimensional space?
Apr
20
comment What is the minimal G-force curve in 2-dimensional space?
Possible duplicate of non-accepted answer physics.stackexchange.com/a/185261/392
Apr
20
answered Rotation of rigid body with two different angular velocities
Apr
20
comment Rotation of rigid body with two different angular velocities
Is $\omega$ the joint velocity (relative) or the absolute velocity of the cylinder?
Apr
19
answered Principal axis of inertia parallel to the ones passing through the center of mass
Apr
19
comment Principal axis of inertia parallel to the ones passing through the center of mass
No principal axes of inertia only go through the center of mass.
Apr
19
comment The two causes for the factor 2 in Coriolis effect
I thought about it, and i decided if I list a component by component answer it would be clear. It ain't, so then I added the picture after the fact.
Apr
19
comment Forces that exert torque on a rigid body in rotation when angular momentum is not parallel to angular velocity
Also, I fixed a few typos in the equations above.
Apr
19
revised Forces that exert torque on a rigid body in rotation when angular momentum is not parallel to angular velocity
edited body
Apr
19
comment Forces that exert torque on a rigid body in rotation when angular momentum is not parallel to angular velocity
It came from $I \vec{\alpha} + \vec{\omega} \times I \vec{\omega}$ which is zero for a constant rotation with a point mass. At each center of mass, the mass moment of inertia is zero. Even if you give the masses a radius $r$, due to symmetry this would be zero.
Apr
19
revised Forces that exert torque on a rigid body in rotation when angular momentum is not parallel to angular velocity
edited body
Apr
18
comment Remove salt from dirt
I'm voting to close this question as off-topic because it belongs to Chemistry
Apr
18
answered Forces that exert torque on a rigid body in rotation when angular momentum is not parallel to angular velocity
Apr
18
comment Forces that exert torque on a rigid body in rotation when angular momentum is not parallel to angular velocity
The weight does not apply a moment on the center of mass, but it affects the support which does apply a moment on the center of mass. Thus a top will not precess at microgravity.
Apr
17
comment Why does the magnitude of linear momentum of a particle in circular motion change with radius?
This has been answered here many times. Links anyone?
Apr
15
comment Assuming there is no wind, do two raindrops of different sizes fall at the same speed?
@WhatRoughBeast I have seen too photos of droplets and they look like disks actually.
Apr
15
revised Why is the center of mass frame always used in rigid body dynamics?
added 628 characters in body
Apr
15
answered Why is the center of mass frame always used in rigid body dynamics?
Apr
15
comment Assuming there is no wind, do two raindrops of different sizes fall at the same speed?
Two drops of the same mass at different speeds have different $C_d$ but similar area $A$. Two drops of different mass at the same speed may have similar $C_d$ but will have different area $A$.