Thursday 9 January 2020

rotational dynamics - When to take the other body as point mass or apply parallel axis theorem on it?


What is the range of $r$ in the formula for parallel axes theorem. Eg. if two discs are attached at a certain point on their circumference and both are in a plane, what is the moment of inertia of the system about axis of one of the discs,so should i consider the other disc as point mass located at $2R$ or apply parallel axes on it. In many such questions they take the other body as point mass and in some cases they apply parallel axis theorem on it.




No comments:

Post a Comment

Understanding Stagnation point in pitot fluid

What is stagnation point in fluid mechanics. At the open end of the pitot tube the velocity of the fluid becomes zero.But that should result...