3particals of masses 100gmeach kept at corners of equilatral triangle of side 2m the M.I.of systemabout atrancevers axis passing through it's centroid is....? A.0.4kg-m2B.0.6 kg-m2 C.0.8kg-m2D.1.2kg-m2
Priya Gorakshnath Anandkar , 14 Years ago
Grade 12
3 Answers
vikas askiitian expert
Last Activity: 14 Years ago
distance of any corner from center is d =a/sqrt3... (a is side of triangle)
moment of inertia of system is I=(I1+I2+I3)
mass and distance from axis of rotation is same for all hree particles so I1=I2=I3
total moment of inertia I = 3I1 = md2 =3(0.1. a2 /3)=0.4kg-m2