Question

a circular disc of mass 100g and radius 10cm is making 2rps about an axis passing through its center and perpendicular to its plane calculate its kinetic energy

Answer 1

m=0.1 kg
r=0.1 m

circumference= 2*22/7*0.1=0.6 m
Velocity=1.2 m/s

kinetic energy= 1/2 * 0.1 * (1.2)^2=