Question

the M.I of a thin rod about an axis passing through it centre and perpendicular to its length is 1200g cm2. If lengthh of the rod is 20cm, find its M.I about an axis passing through its one end and perpendicular to its length.

Answer 1

Explanation:

The 2nd moment of area, or second area moment and also known as the area moment of inertia is a geometrical property of an area which reflects how its points are distributed with regard to an arbitrary axis. The second moment of area is typically denoted with either an {\displaystyle I} (for an axis that lies in the plane) or with a {\displaystyle J} (for an axis perpendicular to the plane). In both cases, it is calculated with a multiple integralover the object in question. Its dimension is L (length) to the fourth power. Its unit of dimension when working with the International System of Units is meters to the fourth power, m4, or inches to the fourth power, in4, when working in the Imperial System of Units.