- #1
Kenneth Dirk
- 5
- 0
I am trying to solve problem number 4 part A and B from (http://people.physics.tamu.edu/kamon/teaching/phys218/exam/2003C/2003C_Exam3_Solution.pdf) but I am confused about certain aspects of it.
In part A, I understand that since we are considering the person as a cylinder, the equation for moment of inertia will include (1/2)MR^2. What I can't seem to understand is where did 2MR^2 come from and why we didn't include the moment of inertia of the arm(which is a rod).
In part B, I understand the rest of the moment of inertia equation but I am confused where did m(1l/2 + R)^2 come from?
In part A, I understand that since we are considering the person as a cylinder, the equation for moment of inertia will include (1/2)MR^2. What I can't seem to understand is where did 2MR^2 come from and why we didn't include the moment of inertia of the arm(which is a rod).
In part B, I understand the rest of the moment of inertia equation but I am confused where did m(1l/2 + R)^2 come from?