Question
Calculate the moment of inertia of a skater given the following information. (a) The 60.0-kg skater is approximated as a cylinder that has a 0.110-m radius. (b) The skater with arms extended is approximately a cylinder that is 52.5 kg, has a 0.110-m radius, and has two 0.900-m-long arms which are 3.75 kg each and extend straight out from the cylinder like rods rotated about their ends.

a) $0.363 \textrm{ kg} \cdot \textrm{m}^2$

b) $2.34 \textrm{ kg} \cdot \textrm{m}^2$

Solution Video