Submerged Bowling Ball
What it does:
The weight of a bowling ball is measured before and after it has been submerged in a tank of water. The weight drops after it has been submerged.
- Equipment: A bowling ball with an eye hook, a spring scale, and a tank of water.
- Setup time: Short
- Difficulty: Easy
- Visibility: High. This demonstration is appropriate for large lecture halls.
- Classroom assembly:
- Hang the bowling ball on the spring scale and measure its weight in air.
- While still attached to the spring scale, submerge the bowling ball in the tank of water.
- Measure the weight of the bowling ball in water.
Disclaimer: Don't attempt this at home.
Credits: Prepared by Jeff Rudd, 1999
Revised by Laura Schmidt, 2011