Question

1. A slim rod 2.0 m long has two small 0.50-kg bodies attached at its two ends and a 0.25-kg body at its midpoint as shown. Find the moment of inertia about an axis perpendicular to the rod has negligible mass.

Answer 1

$I=00.5\cdot0.5^2+0.25\cdot(1-0.5)^2+0.5\cdot(1+0.5)^2=1.3125\ (kg\cdot m^2)$