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visits member for 3 years, 5 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.


Oct
26
comment Does a force do work on an object with constant velocity?
You might be altering the rotation of the earth ever so slightly when pushing a box.
Oct
26
comment How do you calculate the position of the antinodes on a wave?
Then you are back to square one. Using numerical methods and blind guessing for the initial values.
Oct
26
comment Cylinder rolling down slope problem
Nice sketch, is it GeoGebra or what?
Oct
26
comment Why does a bicycle come to rest after travelling a distance?
What makes you think there is no forces acting on a bicycle?
Oct
26
reviewed Approve suggested edit on Why does a bicycle come to rest after travelling a distance?
Oct
25
answered Intuitively, how can the work done on an object be equal to zero?
Oct
25
comment Can we define angular momentum for the wheel under motion?
We can always define angular momentum for a rotating body regardless of the axis it rotates about. Is that what your are asking, I am not very clear on what the question is.
Oct
25
answered Classical mechanics problem for two boxes
Oct
25
comment Classical mechanics problem for two boxes
Also where is the friction between the blocks on your FBD? In general start from a clean FBD with each body separated and every force included. A good start will lead you the way.
Oct
25
comment Classical mechanics problem for two boxes
The force applied to the table is wrong.
Oct
25
comment Force on impact in case of a free fall
Actually the impact force will increase beyond the weight. The extra force is used to accelerate the object away from the contact. If at peak deflection the forces where equal then the system would remain in equilibrium and nothing would move from that point on.
Oct
25
comment Force on impact in case of a free fall
The reaction is going to be at a minimum equal to the weight because if not you would accelerate downwards. How much MORE is a question that depends on the details. What about falling from low height onto a trampoline, vs a marble floor.
Oct
23
revised Finding max height of a mass lanuched by a spring?
added 37 characters in body
Oct
23
answered Finding max height of a mass lanuched by a spring?
Oct
23
answered Torque of a rotating fluid on a weighing scale
Oct
23
comment How to work out the acceleration of an object
BTW I googled acceleration of an object from a force and the first hit gave me your answer.
Oct
23
comment How to work out the acceleration of an object
The problem statement should use the term Force and not Power. Is this a translation issue?
Oct
23
comment How to work out the acceleration of an object
What do you know about the acceleration of an object. How are Newton's Laws of motion applied here?
Oct
22
comment How to measure the energy required to pedal an exercise bike
You might be able to estimate the inertial properties of the flywheel, but you need to figure out the gearing also. With that and the deceleration you can get torque.
Oct
21
comment How to measure the energy required to pedal an exercise bike
Measuring static torque is a lot easier that measuring torque at speed. Maybe looking at the time needed to decelerate from some speed to another speed while not powered.