A point mass MA is connected to a point mass MB by a massless rod of length l as shown in the figure. It is observed that the ratio of the moment of inertia of the system about the two axes BB and AA, which is parallel to each other and perpendicular to the rod is $$IBBIAA=3$$ . The distance of the centre of mass of the system from the mass MA is

Question

A point mass MA is connected to a point mass MB by a massless rod of length l as shown in the figure. It is observed that the ratio of the moment of inertia of the system about the two axes BB and AA, which is parallel to each other and perpendicular to the rod is $$IBBIAA=3$$ . The distance of the centre of mass of the system from the mass MA is

Infinity Learn · Accepted Answer

$$IBB=MAl2$$     $$IAA=MBl2$$  $$given=$$ $$IBBIAA=$$ $$3$$    $$MAMB=3$$ center of mass from $$MA=MBMB+MAl=$$ $$MB4$$ MBl  $$=14$$ l

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material