Seven identical circular planar discs, each of mass M and radius R are welded
symmetrically as shown. The moment of inertia of the arrangement about the axis normal to the plane and passing through the point P is
A
732MR2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
1812MR2
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
192MR2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
552MR2
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is B1812MR2 Ip=I0+7M(3R)2 =(MR22+6(MR22+M(2R)2))+7M(3R)2 =1812MR2