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Conservation of Energy
ICSE / CBSE Class 9–10 · Virtual Physics Laboratory

Principle of Conservation of Energy

Energy can neither be created nor destroyed. It only transforms from one form into another.

Start Learning Open Virtual LabTake Quiz
K+U=constantK + U = \text{constant}

Time required

45–60 minutes

Difficulty

Beginner → Intermediate

Simulations

2 interactive labs

What you will learn

Theory with LaTeXCollapsible chapters, animated step-by-step derivations, every equation typeset.
Lab 1 — Free FallChange mass, height, gravity and air resistance. Live energy bars, graphs, CSV table.
Lab 2 — Simple PendulumRK4 pendulum with friction toggle, marked positions A, B, C and live narration.
Quiz & Certificate30+ randomised questions across six formats, hints, explanations and a certificate.

Learning outcomes

  • State and explain the principle of conservation of energy.
  • Derive K + U = mgh for a freely falling body at positions A, B and C.
  • Explain energy changes during vertical throw and pendulum motion.
  • Interpret PE, KE and total-energy graphs and bar charts.
  • Solve numericals on mgh and ½mv² with confidence.

Core equations you will use

U=mghU = mgh
K=12mv2K = \tfrac{1}{2} m v^2
E=K+U=constantE = K + U = \text{constant}

Every simulation on this site solves these same equations in real time — nothing is faked.