The angular momentum of rotating body is increased by 20 %. What will be the increase in its rotational kinetic energy ?

The angular momentum of rotating body is increased by 20 %. What will

1.	The angular momentum of rotating body is increased by 20 %. What will be the increase in its rotational kinetic energy ?
Answer» SOLUTION :KINETIC energy K.E. `=(L^(2))/(2I)""EalphaL^(2)` `(E+DeltaE)/(E)=((120)/(100))^(2)` (or) `(DeltaE)/(E)=0.44` `(DeltaE)/(E)xx100=44%`