Physics HL

Chapter 3: Work, Energy and Power

Develop the language of energy transfer, move from force-based work to conservation reasoning, and quantify power and efficiency in realistic systems.

1 simulation entries

Simulation A: Low-Friction Baseline

Check near-conservative behavior first, then compare later presets against this baseline.

Appears in: 3.4 Conservation, Dissipation, and Real Systems

Work-Energy Lab

Ramp-body energy scene

friction (3.56 N)mgnormalA body-on-ramp diagram tied directly to the computed energy pathway.

Sankey energy flow

Input mechanical45.41 JUseful kinetic output26.90 J (59.2%)Thermal loss (friction)18.51 J (40.8%)

Initial mechanical

45.41 J

Friction transfer

18.51 J

Final kinetic

26.90 J

Final speed

5.19 m/s

Read the Sankey as a conservation diagram: one incoming stream splits into useful kinetic output and thermal dissipation, with widths proportional to actual computed energy.