Question
Physics Question on momentum
A circular disc is to be made by using iron and aluminium, so that it aquires momentum of inertia about its geometrical axis. It is possible with
A
iron and aluminium layers in alternate order
B
aluminium at interior and iron surrounding it
C
iron at interior and aluminium surrounding it
D
Either (a) or (c)
Answer
aluminium at interior and iron surrounding it
Explanation
Solution
By doing so the distribution of mass can be made away from the axis of rotation.