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visits member for 3 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.


1d
answered Optimal speed for the water wheel
1d
comment Calculate vertical distance using acceleration
Which the OP can eliminate if they follow the method outlined in my answer.
2d
comment Why is the inertia ellipsoid of a higher symmetry than the rigid body?
It is a good answer indeed.
2d
comment Calculate vertical distance using acceleration
Shouldn't the red line (position) go back to zero after the event?
2d
answered Approximating Rolling/Sliding in 2D Shape
2d
comment Approximating Rolling/Sliding in 2D Shape
Some courses dealing with this subject ocw.uc3m.es/ingenieria-mecanica/machine-theory/lectures-1/…
2d
comment Approximating Rolling/Sliding in 2D Shape
Look up cam and roller analysis, as well as cam kinematics. In your case the roller is really big (flat ground), but you should get an idea of how to handle these problems.
Jul
18
comment How are the distances to the most distant $\gamma$-ray bursts measured?
possible duplicate of How do you measure distance to stars within the galaxy?
Jul
18
comment Inclined conveyor belt mystery
You mean the traction required by the belt to accelerate the sand? Also, please show us your calculations thus far.
Jul
18
comment How are the distances to the most distant $\gamma$-ray bursts measured?
And also using Variable stars in a star cluster.
Jul
18
comment Inclined conveyor belt mystery
Are you looking for the reaction forces at the belt rollers (lower and upper position)? What force (location, direction) are you really talking about? Also conservation of linear momentum means the support force depends on the speed of the conveyor also.
Jul
17
comment Wrong calculation of work done on a spring, how is it wrong?
Gravity does not change with distance (much), but spring force does (a lot).
Jul
17
comment Does time move slower at the equator?
@Trimok consider placing your comment as an answer.
Jul
17
comment Is there a difference between “average acceleration” and centripetal acceleration?
I think is a poorly worded question.
Jul
17
comment Kinetic and potential energy of riser
Shouldn't PE include gravity also, or is it ignored for this problem?
Jul
17
comment What point of application of force ensures more acceleration in a rod?
@OlinLathrop I wish you would use math formatting for better readability when posting here.
Jul
17
comment What point of application of force ensures more acceleration in a rod?
I corrected the rotational equation.
Jul
17
revised What point of application of force ensures more acceleration in a rod?
added 70 characters in body
Jul
16
comment Add weight in front or behind the moving wheel?
The only thing that makes the wheels turn is friction. Put this on some slippery ice and observe.
Jul
16
comment Can I make a rod in the vertical plane move with its one end on the ground in a slanting position?
Is this the Painleve problem?