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World 4 · SHM & Springs · 6 min · PRO

Pendulum Period

Timekeeping by length

PRO · Forces & Motion

World 4: SHM & Springs is part of PRO

The first world of Forces & Motion is free. PRO opens the other 50 lessons in 11 worlds — simulations, quizzes and all.

  • Spring Oscillation
  • Stiffer Springs
  • Heavier Mass
  • Hooke’s Law
  • Longer Pendulums
PRO includes
  • All 26 labs — every world, every lesson
  • Practice exams and certificates

$8.33/mo, billed yearly ($99.99) · or $39.99 monthly

Unlock Forces & MotionTry the free world
← Hooke’s LawLonger Pendulums →

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