Lab #1 Data:

Mass of the solid cylindrical object = 92.0 g
Groove diameter in the cylindrical object = 3.495 cm

Rod#1
Length of the rod = 11.01cm
Mass of the rod = 6.50 g

Rod#2
Length of the rod = 10.99 cm
Mass of the rod = 6.10 g

Mass of the attachment to the rod = 3.56 g