Maybe you know I like numerical calculations, well I do. I think they are swell. VPython is my tool of choice. In the post Basics: Numerical Calculations I used vpython and excel to do something ...

The mass is just sitting there motionless. There is no acceleration and it is in equilibrium. What does this mean? This means that the net force in the y-direction (vertical direction) must be zero. I ...

If you are designing a product that requires any sort of smart-motion precision, spring parts that apply constant force or constant resistance are key mechanical design elements to consider. Two of ...

The greater Philadelphia area is still dealing with the cold and mounds of snow but about 1,000 miles south, the sun is shining, the sound of mitts popping is filling the air and spring training has ...