Three identical balls with masses of M, 2M, and 3M are fastened to a massless rod of length L as shown. The rotational inertia about the left end of the rod is ?
Please help. Thank you
We know that
I=mr2I=mr^2I=mr2
I=I1+I2+I3I=I_1+I_2+I_3I=I1+I2+I3
I=32ML2I=\frac{3}{2}ML^2I=23ML2
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