Question

A uniform sphere of radius 0.5m and mass 15kg rotate with the xy plane about axis through the center.find the angular momentum when the angular velocity is 3rads/ seconds

Answer 1

$w =3\frac{rad}{s}$

$r =0.5m$

$m = 15kg$

$L = I_zw$

$Iz=\frac{2}{5}mr^2= \frac{2}{5}15*0.5^2= 1.5$

$L = 1.5*3 = 4.5$

Answer : L = 4.5