mechanics of solid lab

DATA HAS BEEN ALTERED-- this is just an example! ***not correct area

rubber band area (m2)*** 0.000004

L0=5.5 cm MASS(g) delta (cm) Force (N) strain stress (MPa)

L1 7.6 50 2.1 0.4905 0.168 0.0000002

L2 8.8 70 3.3 0.6867 0.264 0.000002

L3 9.6 90 4.1 0.8829 0.328 0.000002

narrow rubber 

L0=5.5 cm MASS(g) delta (cm) Force (N) strain stress (MPa)

L1 6.8 50 1.3 0.4905 0.14606742 0.0000001

L2 7 70 1.5 0.6867 0.16853933 0.000001

L3 7.4 90 1.9 0.8829 0.21348315 0.000001

several rubber 

L0=5.1 cm MASS(g) delta (cm) Force (N) strain stress (MPa)

L1 6 100 0.9 0.981 0.11111111 0.00000012

L2 6.4 150 1.3 1.4715 0.16049383 0.0000012

L3 7.1 200 2 1.962 0.24691358 0.0000012

wide rubber 

L0=7.6 Cm MASS(g) delta (cm) Force (N) strain stress (MPa)

L1 9.1 100 1.5 0.981 0.000022

L2 10.3 150 2.7 1.4715 0.000022

L3 12.1 200 4.5 1.962 0.000022