Energy transfers- bungee jumpers

Energy Store at start of jump

All of the energy in the system is the store of gravitational potential energy

Energy Store/Transfer as bungee jumper jumps

gravitational potential energy store is transferred to kinetic energy store

Energy Store as bungee rope starts to tighten

The kinetic energy store is at its maximum

Energy Store when rope is fully extended

Kinetic energy store is 0. All of energy has been transferred to the elastic potential energy store

Energy Store/ transfer as bungee rope recoils

elastic potential energy is transferred to kinetic energy store

Energy Store/ Transfer during ascent

Kinetic energy store is transferred to gravitational potential energy store

Energy Store/ Transfer at the top of the ascent

All of the energy is now as the gravitational potential energy store

Key idea about bungee jumper

jumper never returns to original position

This is because energy is dissipated as thermal energy

How is energy dissipated as thermal energy

Due to friction with air particles

Due to stretching effects in the bungee rope which is not fully elastic