A thin wire of length l and mass m is bent in the form of a semicircle. The moment of inertia about an axis perpendicular to its plane and passing through the end of the wire is what???
Sayani , 7 Years ago
Grade 11
1 Answers
Arun
Last Activity: 7 Years ago
use angular momentum conservation
I1w1=I2w2
as radius reduces by 1/n , moment of inertia of sphere reduces by 1/n2, so its angular velocity increases by a factor of n2