ja72

3,516 reputation

522

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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.

	3,516 reputation	bio	website		visits	member for	2 years, 6 months
522 badges		location	United States		seen	1 hour ago

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May 15	answered	Physics of the point of contact for a spinning top
May 14	revised	Difference b/w Kinetics & Kinematics w/concrete example added 211 characters in body
May 14	answered	Difference b/w Kinetics & Kinematics w/concrete example
May 14	comment	Rotational Dynamics Problem-Rod slipping against block Is there friction here?
May 14	revised	Finding Angular Acceleration of rod given radius and angle edited body
May 14	comment	How is torque equal to moment of inertia times angular acceleration divided by g? I don't disagree, it is idiotic, but it is a result expressing angular momentum in engineering units.
May 13	comment	How is torque equal to moment of inertia times angular acceleration divided by g? You use it like you see in the original posting.
May 13	comment	The second resonance of string? You know about `(speed)=(wavelength)*(frequency)` and that the wave speed is constant if the tension is constant.
May 13	comment	What force does the seat exert on the rider at the top and bottom of the ride? You need to ask for help understand your answer or method, not what is the answer.
May 13	comment	How to determine the direction of medium's displacement vectors of a standing wave? Intuition I guess. A node is where there is no deflection, and on opposite sides of the node the deflection has to be of opposing direction for things to balance out.
May 13	answered	How is torque equal to moment of inertia times angular acceleration divided by g?
May 13	reviewed	Approve suggested edit on How is torque equal to moment of inertia times angular acceleration divided by g?
May 13	answered	How to determine the direction of medium's displacement vectors of a standing wave?
May 7	answered	How can I solve for time without knowing the vertical velocity?
May 7	revised	Integrating radial free fall in Newtonian gravity added 140 characters in body
May 7	answered	Integrating radial free fall in Newtonian gravity
May 3	reviewed	Approve suggested edit on Violation of Newton's Second Law (?)
May 2	revised	How to determine a reaction force? added 4 characters in body
May 2	comment	How to determine a reaction force? @BenCrowell, in robotics and machine design.
May 2	comment	How to determine a reaction force? Same difference.