Equal Mass but Unequal Density

Objects of the same mass but different density are set out for viewing and discussion. The objects all have a mass of 1 kg but have different densities and thus different volumes and shapes.

Setup:

Place the objects on the instructor's table.

Notes:

None

Courses Used In:

• PHY 10111

• PHY 10310

• PHY 10410

• PHY 30210

Discussion and Polling Questions:

• How does this relate to the age-old question: Which is heavier, 1kg of rocks or 1kg of feathers?

• In what situations would having a higher density be preferable?

• In what situations would having a lower density be preferable?

Equipment Needed:

• 1 kg Brass Cylinder

• 1 kg Wooden Block

• 1 kg Plastic Puck