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Physics
Class 11

ICSE · Class 11 · Physics

Work, Power and Energy

Chapter 4ISC · Class XI · examination 2028

9 worlds · 2 labs for this chapter.

Topics

Energy
- Variable-force work
- Work-energy theorem
- Spring energy
- Power
- Elastic and inelastic collisions

Learning objectives

Use work or conservation laws to analyse a collision or energy transfer.

Worlds

Places to explore freely · 9 worlds

WorldThe Simple PendulumPush a playground swing, time its beat, and find the one thing that sets it: the length of the chain.
WorldConservation of EnergyLet a coaster go from the top of its lift: height turns into speed, friction takes its cut, the loop asks for √(gr)
WorldPulleys, Ramps & WorkRig a block and tackle, haul a trolley up a ramp, time a winch: a machine trades force for distance, never saves work
WorldMomentum & CollisionsSwing a wrecking ball through a brick wall, crash a sled with and without a crumple zone, and couple railway wagons
WorldFree Fall & Air ResistanceRace a hammer and a feather through a vacuum, then ride a 45 m drop tower until the air stops you speeding up
WorldMotion & ForcesEight experiments on one track, Class 6–9 or Class 10–12 — light gates, ticker tape, friction, a ramp, a crash — each stop measured by the cart itself
WorldNewton’s Laws of MotionBrake a 1,720 t freight train from 100 km/h and watch it need nearly a kilometre: Newton’s laws in a rail yard
WorldFrictionWax a playground slide, mat it, rain on it, then tilt a test chute until a rubber boot finally lets go
WorldWind & Solar EnergyDouble the wind on a real 2 MW turbine and get eight times the power, then tilt and track solar panels at 23°N

Main lab

Built for this chapter · 1 lab

Main labWork, Energy and PowerPhysics

More labs

Also fit this chapter · 1 lab

LabOscillations LabSimple harmonic motion

Practice

Questions for Class 11 Physics, with worked answers, on screen or as a printed paper.

Open the question bank

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