The radius of the Lisebergshjulet is R=24 m.

• What is the elevation difference between the highest and lowest points?
• How much do you expect the air pressure to change between the highest and lowest points?
• If your phone has a barometer, try measuring the pressure change as you travel in the Ferris wheel -or move up and down an escalator (use e.g. Physics Toolbox Play or PhyPhoX)
• Look at the graph below of an estimate of the elevation variations during the ride (based on measurement for the air pressure).
  • What time (T) is needed to complete half a turn?
  • How far (S) do you travel during half a turn? 
  • What is the speed during this motion (v=S/T)?
  • How large is the centripetal acceleration during the motion (v²/R)?