Dynamics RB app for iPhone and iPad

This application gives opportunity to play with parameters of typical mechanical dynamics problems such as nonlinear pendulum, mass-spring-damper system and projectile motion of a baseball ball.

Therefore, you own your numerical test lab on the phone to have better understanding on important phenomenons.

Animations and xy graph plots are provided to give better and visual understanding of the results. Characteristic parameters of equations are provided in animations for special testing purposes.

Users can create and email pdf (screenshot) and cvs data.


4th order Runge Kutta solutions are used in reported results. Users are able to alter parameters and precision of the numerical method in every case.

Case 1: Pendulum in fluid friction (air)

Linear case can be set by just setting fluid friction is equal to zero.

Duration and number of steps determine the step size by which you can adjust accuracy.

Case 2: Mass-Spring-Damper system

Damping Ratio and undamped natural frequency are given in animation view for experimenting special cases such as critical damping resonant frequencies etc.

Duration and number of steps determine the step size by which you can adjust accuracy.

Case 3: Projectile motion of a baseball ball in air.

Linear case can be set by just setting drag coefficient (Cd) is equal to zero.