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age 45
visits member for 4 years, 9 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. #SOreadytohelp


16h
comment components of vector regarding the direction of acceleration
Are you looking at an arctan() function to convert Cartesian coordinates into polar form?
23h
comment Find the separation distance for a line of oil being squashed between two flat plates
In order for the plates to move, oil has to travel from the middle towards the edges (with laminar flow perhaps). I am sure the shear stress formula is where you start after you have decided what the generic velocity profile of the oil is.
1d
awarded  Announcer
2d
comment How much do the rear and front, side-parts of this 2,400 lb. car weigh?
I think if you re-edit the question it can be nominated to be opened again. You want to know the load of each tire on a car when one corner is lifted a small amount.
2d
comment How much do the rear and front, side-parts of this 2,400 lb. car weigh?
I worked out the problem. If the front spring rate is $k_{F}$ and the rear $k_{R}$ in lbs per inch then the overall effective spring rate is $k=\dfrac{1}{\frac{1}{k_F}+\frac{1}{k_R}}$. Now if you lift one corner by a distance $s$, this corner plus the diagonal corner will see an increase in load of $k \frac{s}{2}$ each. The other two corners will see a similar decrease in load.
2d
comment How much do the rear and front, side-parts of this 2,400 lb. car weigh?
1370 lbs front (685 lbs per side) and 1030 back (515 lbs per side). This is a 57/43 weight distribution. To get the change in force distribution with raising a wheel you also need to spring rates (front and back).
2d
comment Angular Speed and Normal Speed
the distance traveled is $s$ and not $d$.
2d
comment How much do the rear and front, side-parts of this 2,400 lb. car weigh?
Actually it does. Weight distribution (front-back and left-right) tell you what is the force that has to go through the tire to keep the car in balance. Lifting by one inch will alter this a bit, but overall it will remain the same.
Aug
27
comment Do two waves of different frequencies create a resultant wave of lower frequency?
Related question: math.stackexchange.com/q/1321811/3301
Aug
27
answered Calculate Spring Constant
Aug
27
comment Calculate Spring Constant
I think a better design would be to use some plastic stops which give when hit over 10mph and use the springs as a return mechanism so the stumps don't flatten out completely.
Aug
27
comment Calculate Spring Constant
Good question. Those look like extension springs. In your question you phrase it like they are going to be compression springs. Can you please provide more details on the design and the side the ball is going to impact in order to understand better.
Aug
27
comment Calculate Spring Constant
Related: physics.stackexchange.com/a/126117/392
Aug
25
comment modelling the sound wave of a guitar string with an equation
Hey, Great Code. I did a spin off, that simulates the plucking action a little better. Look at khanacademy.org/computer-programming/string-pluck-code/…
Aug
25
answered modelling the sound wave of a guitar string with an equation
Aug
25
revised How to calculate the moment of inertia of a solid cube
Fixed incorrect $\hat{e}$ vector
Aug
25
answered How to calculate the moment of inertia of a solid cube
Aug
24
answered Very basic question about vector
Aug
23
comment How much do the rear and front, side-parts of this 2,400 lb. car weigh?
In racing there is something called "corner weights" essentially you put up each tire over a scale to get the weight of each quadrant of the car.
Aug
23
comment How much do the rear and front, side-parts of this 2,400 lb. car weigh?
Look up the weight distribution for this model year corolla. Alternatively estimate a 57% front 43% back, with a 2300 lbs total dry weight.