What's New!
Thrown Javelin Flight Dynamics Physics Graphical Simulator
This model simulates the throw of a javelin with no spin and no wind in a vertical plane. This is a simplified situation to be able to analyze the pure dynamics of a javelin throw. The user can change several initial conditions including velocity, angle of the javelin (theta), angle of the velocity vector (phi), angle of attack (phi), and angular velocity (omega). 
Roller Coaster Physics Graphical Simulator
This simulation simulates motion along a constrained path, such as what a roller coaster would take (assuming it has safety wheels to keep it on the track in “upsidedown” situations, of course). The simulation offers a chance to explore a number of concepts associated with roller coaster physics, including conservation of energy, reaction forces, motion in a vertical plane and friction. 


What's New!
Elastic Frame Ends Fixed Formulas and Calculator
Reaction and deflection formulas and calculator for inplane loading of elastic frame with mounting ends fixed Case 5a formulas and calculator. Roark's Formulas for Stress and Strain, Seventh Edition, Table 8.2 reference loading number 5a 
Black Body Radiation Formula and Calculator
Bodies under thermal agitation induced by temperature emit thermal radiation in the form of electromagnetic waves ranging in wave length from the long infrared to the short ultraviolet. Radiation emitted from a body can travel undiminished through a vacuum or through gases with relatively little absorption. 

