A Uniform,solid,cylindrical Flywheel of Radius 1 $2.7 \mathrm { rad } / \mathrm { s }$

Multiple Choice

A uniform,solid,cylindrical flywheel of radius 1.4 m and mass 15 kg rotates at $2.7 \mathrm { rad } / \mathrm { s }$ What is the magnitude of the flywheel's angular momentum?

A) 40 kg ∙ m²/s
B) 20 kg ∙ m²/s
C) 80 kg ∙ m²/s
D) 60 kg ∙ m²/s