Java Physics



Pendulum (Jumping Pendulum)

  • Drag the pendulum bob to one side and release.
  • The bob will (i) oscillate, or (ii) undergo a complete or incomplete circular motion, depending on the level of release and whether or not the pendulum is interrupted by the pin.
  • Assumptions:
    (1) All frictional forces are negligible.
    (2) The string is inextensible.
    (3) The radial velocity of the bob will disappear instantly when the string becomes straight after a free fall.



Internal Links :

Spring-Mass Oscillator (Kinematics)

Spring-Mass Oscillator (Energy Changes)

SHM Oscillator

Phase Difference

Condition for Interrupted Pendulum Undergoing Complete Circular Motion (Pdf)

Download Executable Jar File




  • The author (Chiu-king Ng) has the copyright on all the simulations in this website.
  • Email, where AA is the prime number following 7.
  • Last Update:2019-3-20