ja72

3,506 reputation

522

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	location	United States
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visits	member for	2 years, 6 months
	seen	5 hours ago
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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.

	3,506 reputation	bio	website		visits	member for	2 years, 6 months
522 badges		location	United States		seen	5 hours ago

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206 Answers

votes activity newest

21	Would you be weightless at the center of the Earth?
14	Why don't astronauts in orbit get stuck to the “ceiling”?
7	Elementary derivation of the motion equations for an inverted pendulum on a cart
7	Why isn't pressure used for flight?
7	Why does a rotating tire use the static, rather than the dynamic coefficient of friction?

3,506 Reputation

+35	Determine the velocity and acceleration of the vertex $B$
+35	Static friction force on a block in a tunnel
+10	Integrating radial free fall in Newtonian gravity
+15	Physics of the point of contact for a spinning top

11 Questions

votes activity newest

16	What if the universe is rotating as a whole?
12	Particle wavefunction and gravity
7	How does stuff glow in the dark?
4	How do you measure distance to stars within the galaxy?
4	What sets the resolution on analog film?

140 Tags

50 newtonian-mechanics × 63	31 forces × 30
43 gravity × 8	26 kinematics × 33
40 homework × 57	23 earth × 2
36 classical-mechanics × 28	21 planets
32 newtonian-gravity × 7	18 mechanics × 22