A Uniform, Solid, Cylindrical Flywheel of Radius 1 $40 \mathrm {~kg} \cdot \mathrm { m } ^ { 2 } / \mathrm { s }$

Multiple Choice

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

A) $40 \mathrm {~kg} \cdot \mathrm { m } ^ { 2 } / \mathrm { s }$
B) $60 \mathrm {~kg} \cdot \mathrm { m } ^ { 2 } / \mathrm { s }$
C) $80 \mathrm {~kg} \cdot \mathrm { m } ^ { 2 } / \mathrm { s }$
D) $20 \mathrm {~kg} \cdot \mathrm { m } ^ { 2 } / \mathrm { s }$