Okay I get it, thanks for clearing that up for me! I apply the parallel axis theorem to the sphere, and the moment of inertia for a rod with the axis of rotation at the end is (1/3)ML^2
Homework Statement
A solid ball of mass M and radius is connected to a thin rod of mass m and length L as shown. What is the moment of inertia of this system about an axis perpendicular to the other end of the rod?
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Homework...
Homework Statement
Find the enclosed mass profile M(r) in terms of R* and the total mass M* of the star.
Homework Equations
dMr/dr = 4(pi)r2(density)
density is given as: rho(r) = (rho_c)[1-(r/R*)2]
Where rho_c is the central density and R* is the radius of the star.
3. Attempt at a...