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visits member for 3 years, 11 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.


Sep
17
comment Finding the distance between two osclilating particles in a wave
If you are an ant and want to go from A to B you care about the 1st number. If you have straight ruler you care about the 2nd number. It depends as I said.
Sep
17
revised Finding the distance between two osclilating particles in a wave
added 9 characters in body
Sep
17
answered Finding the distance between two osclilating particles in a wave
Sep
16
comment What happens inside a body when it rotates?
Torque is related to spatial acceleration and not material acceleration. Spatial acceleration is zero for a constantly rotating body.
Sep
16
comment What happens inside a body when it rotates?
Torque is just a way to express force at a distance. A purely rotating rigid body needs to torque so I am failing to see the connection between the definition of torque and the material acceleration of the atoms in the body.
Sep
16
comment Vectors and Forces problem
So force and acceleration are related by what? Do you know about Newton's Laws?
Sep
16
comment Vectors and Forces problem
Is friction involved at all?
Sep
16
comment If the universe is expanding, what is it expanding into?
It is not expanding, just our rulers are getting smaller all the time.
Sep
15
comment Why are some forces not included in the sum of forces?
In general you should develop the equations with $\ddot{x} \ne 0$ and $\ddot{y} = 0$. Then in the end use the constant motion $\ddot{x}=0$ in order to find the tension $T$.
Sep
14
revised Time derivative of angular velocity in rotating reference frame
added 120 characters in body
Sep
14
comment Find vector position in time give this graph?
This is to illustrate that curve fitting without an underlying physical model is useless. The OP needs to establish a physical model first before trying to interpolate between points A B and C
Sep
13
comment Acceleration: A ball sliding down the inside of a semicircular bowl
+1 for curiosity
Sep
13
comment Question about torque and center of mass
See physics.stackexchange.com/a/29160/392
Sep
13
comment Confusion regarding a method of writing constraint equations
Since gravity is a conservative force the total energy of the system has to remain constant. The internal motion, will do no work overall since energy is constant.
Sep
13
revised Confusion regarding a method of writing constraint equations
deleted 17 characters in body
Sep
13
answered Time derivative of angular velocity in rotating reference frame
Sep
13
comment Time derivative of angular velocity in rotating reference frame
Have you read en.wikipedia.org/wiki/Rotating_reference_frame ?
Sep
11
revised Moment of inertia as a tensor
added 115 characters in body
Sep
11
answered Moment of inertia as a tensor
Sep
11
comment Moment of inertia as a tensor
Do you know what a 3×3 matrix is?