1.

Pendulum of rod and connected disc when disc is rotating

Answer»

1. The problem statement, all variables and given/known data
Find the moment of INTERTIA of a pendulum, consisting of a DISC free to SPIN attached to a rod that is hinged at ONE end.

2. Relevant equations
Moment of intertia of rod hinged at end = (1/3)Ml2
Moment of intertia of disc = (1/2)mR2 + ml2

3. The attempt at a solution
Why does the answer disregard the partmoment of intertia of the disc (1/2)mR2that is SPINNING on its own axis, and only taking into account the ml2?



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