Newton's Cradle

This interactive simulator explores Newton's Cradle in Classical Mechanics. Conservation of momentum and energy visualized with swinging balls. Use the controls to change the scenario; watch the visualization and any graphs or readouts to connect the model with lectures, labs, and homework.

Who it's for: Suited to beginners and first exposure to the topic. Typical context: Classical Mechanics.

Key terms

  • newton's
  • cradle
  • newtons cradle
  • mechanics
  • classical

Live graphs

How it works

Newton’s cradle idealizes equal masses in a line with elastic impacts. In 1D, two equal spheres in a head-on elastic collision exchange velocities. Here a small chain propagates that impulse; light damping models air and hinge losses so motion eventually stops.

Key equations

Elastic, equal masses: v₁′ = v₂,   v₂′ = v₁ (head-on)
p = Σ mᵢvᵢ   conserved in elastic collisions