Question

The body is rotating with uniform angular velocity (w) having rotational kinetic energy (E). Its angular momentum (L) is: ...............

a) ${\displaystyle \frac{2E}{\omega }}$

b) ${\displaystyle \frac{E^2}{\omega }}$

c) ${\displaystyle \frac{E}{{\omega }^2}}$

d) ${\displaystyle \frac{E}{2\omega }}$

Answer 1

a) E = 1/2 Iω²

∴2E = (Iω)ω

∴ ${\displaystyle \frac{2E}{\omega }=L}$