PIRA Classification: 1J40.10
Description: A bar (1 m) has a small hook at one end and a handle at the other. Show the students that it is easy to rotate the bar when there is no mass on the hook. Place a 1 kg mass on the hook and try to rotate the handle to raise the mass (more difficult).
Special Instructions: None
Condition: OK
Setup time: 1 minute
Safety Issues: None