Skill — Solve problems by comparing energy in different states.
Appears in chapters
04·04b·08·13
Linked atoms
49 linked atoms.
04 Energy and work
- Worked example — minimum height for the loop
- Worked example — apple and spring
- The loop-the-loop: energy approach
- Problem — Block on a smooth inclined plane
- Problem — Cart on a smooth track
- Problem — Loop-the-loop
- Problem — Spring compressed by a block
- Problem — Ball launched by a spring
- Problem — Vertical projectile with drag
- Problem — Bungee jump
- Problem — Velocity of a pendulum
- Problem — Velocity of a falling stone
- Problem — Minimum velocity in the loop-the-loop
- Multi-state problems
04b Oscillations and simple harmonic motion
- Energy in the harmonic oscillator
- Worked example — Vertical spring with energy balance
- Worked example — Maximum velocity from energy
- Problem — Energy and amplitude
06 Centre of mass
08 Universal gravitation
- Derivation of escape velocity
- Worked example: two asteroids falling towards each other
- Worked example: satellite, aphelion and perihelion
- Escaping the Solar System
- Maximum and minimum distance from the central body
- Escape velocity
- Escape velocity from Earth (energy)
- Velocity of a comet at perihelion
09 Kinetic theory of gases
12 Cycles and heat engines
- Problem — Balances of a cycle
- Problem — Morning shower
- Problem — Fridge with the door open
- Problem — Room with an open fridge
13 Coulomb force and electrostatics
- Electrostatic potential energy
- Problem — Collision between charges with friction
- Problem — Two charges launched upwards
14 Electric field and potential
- Plates pulled apart with the battery disconnected
- Charging a capacitor
- From stored energy to voltage
- Potential difference and work
- Dipole and test charge
- Drill: work in moving a charge
- Two charged capacitors connected together
- Energy of a capacitor
- Equipotentials and field lines are perpendicular
- Sci-fi physics — protons with double the mass
- Work to separate two charges