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visits member for 4 years, 8 months
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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.


Jul
13
answered What are the forces acting when we squeeze a ball? Free Body Diagram?
Jun
28
comment Why is my two body model not working?
Writing a well behaved simulator is hard. But the rewards are awesome as you learn all there is to know. You are in step one and this answer takes you through steps 2, 3 and 4. The more you work at it the more nuances you tackle taking you through steps 5...12. You have earned a PhD at this point.
Jun
25
awarded  Notable Question
Jun
25
awarded  Popular Question
Jun
18
revised How do we calculate instantaneous velocity in 2D?
added 234 characters in body
Jun
18
answered How do we calculate instantaneous velocity in 2D?
Jun
18
comment Darcy friction factor
Yes, this is exactly how you can do it.
Jun
17
comment Darcy friction factor
Alternatively you can try $L' = \frac{\partial L}{\partial f}f' + \frac{\partial L}{\partial \epsilon}\epsilon'+\frac{\partial L}{\partial R_e}R_e'$ but it looks to be very messy.
Jun
17
comment Darcy friction factor
I only did 1 point, so I cannot comment. It is up to you now.
Jun
17
answered Darcy friction factor
Jun
15
comment Acceleration of two masses attached by a pulley in an elevator
You mean this? physics.stackexchange.com/a/79182/392
Jun
15
comment Acceleration of two masses attached by a pulley in an elevator
Indeed. I did the same problem but with a pulley with mass and inertia and the results work ok the same at the limit.
Jun
15
comment Acceleration of two masses attached by a pulley in an elevator
Yes. I have revised my answer, and revisited my assumptions.
Jun
15
revised Acceleration of two masses attached by a pulley in an elevator
deleted 140 characters in body
Jun
14
answered Acceleration of two masses attached by a pulley in an elevator
Jun
14
revised Using the equations $y(x,t)=A\sin(kx-wt)$ and $w=2\pi f$, if we solve for amplitude could we determine a relationship between amplitude and frequency?
Math formatting
Jun
11
comment What is the physics of traffic speed limit?
The department of transportation sets the limit as low as possible without people complaining too much. The design limits are much higher than the actual limits.
Jun
11
revised Uniform Circular Motion and Centripetal Acceleration
added 3 characters in body
Jun
11
comment How can tangential acceleration from a radial force be explained?
Personally I love it when geometry can explain concepts better than equations.
Jun
11
awarded  Nice Answer