Physics help moments of inertia?

Posted on 2015-01-08 05:59:00 in Physics by MIKE

1.A pendulum is made of a rod of mass 3kg and length 2.1m whose moment of intertia about its center of mass is (1/12)MR^2 and a thin cylincdrical dist of mass 2.5kg and radius 1.3 m who moment of inertia about its center of mass is (1/2)MR^2

What is the moment of inertia of the pendulum about the pivot point? (units are kg x m^2)

2. a. Calculate the moment of inertia of a solid cylinder of mass 9.9 kg and radius 3.67 m about an axis parallel to the center-of-mass axis and passing through the edge of the cylinder. (kg x m^2)

b.C alculate the moment of inertia of a solid sphere of mass 10.1 kg and radius 7.75 m about an axis tangent to its surface. Answer in units of kg · m2

3. Consider a 8 kg square which has its mass concentrated along its perimeter, with each side of length 6 m.

a. What is the moment of inertia of the square about an axis perpendicular to the plane of the square at its center of mass? Use the parallel axis theorem and divide the square into parts. The moment of inertia of a rod
rotated about its CM is I=(1/12)md2 (kg · m^2).

b. What is the moment of inertia of the square about an axis perpendicular to the plane of the square at one of its corners? (kg · m2)

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