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visits member for 4 years, 1 month
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Started programming on a ZX spectrum in the 80's and have moved through Assembly, Turbo Pascal, C++, C#, Fortran. My main area of focus is engineering and scientific computing like numerical methods and 3D graphics.


Dec
14
comment Determine reaction forces on square frame
I have updated the answer. The method was correct, I just assumed a different mass variable.
Dec
14
revised Determine reaction forces on square frame
deleted 49 characters in body
Dec
14
comment Determine reaction forces on square frame
What I did wrong is $m$ which for me is the total mass of the 4 rods. Hence the $I_z$ and $m$ is not correct above.
Dec
13
revised Determine reaction forces on square frame
deleted 11 characters in body
Dec
13
answered Determine reaction forces on square frame
Dec
12
comment Does a bungee cord have a moment of inertia?
Absolutely correct @user44816. You said it much better that I could.
Dec
12
revised Does a bungee cord have a moment of inertia?
added 271 characters in body
Dec
12
answered Does a bungee cord have a moment of inertia?
Dec
12
comment Does a bungee cord have a moment of inertia?
Are you asking about mass moment of inertia as it pertains to rigid body rotations, or area moment as it pertains to bending problems.
Dec
12
revised Computing lengths for a rotating rod
added 107 characters in body
Dec
12
answered Computing lengths for a rotating rod
Dec
12
revised Computing lengths for a rotating rod
added 63 characters in body
Dec
12
comment Computing lengths for a rotating rod
If it is a massless rod then there will be no bending, but if the rod has mass moment of inertia then there will be bending.
Dec
11
comment Computing lengths for a rotating rod
A rod rotating about its end, or a rod rotating about its axis, like a shaft? Either way there is not bending moment, but only axial and or radial stresses. Maybe a sketch can help clarify the exact problem here.
Dec
8
revised Net work done for rubber bands
edited tags
Dec
8
comment Is velocity always tangential to trajectory?
a) Please try to use math formatting for better readability and b) In polar coordinates the unit direction vectors do no line up with the path and hence both components are non-zero. Only when rotated along the path the velocity component is zero normal to the path direction.
Dec
8
comment Is velocity always tangential to trajectory?
possible duplicate of Normal force of ball sliding on concave surface
Dec
7
comment Torque on shaft
The answer is that the torque is applied on different objects. It is the same as when you push a block. You push and it moves forward, while it pushes you back and slows you down.
Dec
7
comment Torque on shaft
Consider using math formatting with $...$ for better readability. See help on LaTeX
Dec
7
revised Torque on shaft
Math formatting