PIRA Class: 2B40.40

Purpose: 

To show that gases like liquids can also exert a buoyant force on objects immersed in them.

Description:
Place a balanced baroscope in the bell jar and apply vacuum grease before attaching the vacuum pump. Evacuate the chamber and observe the tilting of the baroscope. 

Equipment:
Bell jar, vacuum pump, baroscope

Web Simulation:

https://instructional-resources.physics.uiowa.edu/demos/2b4040-buoyancy-demo-baroscope

Location:
Shelf 223 (bell jar), 512 (vacuum pump)