If instead of the force F an actual mass m 0.590kg is hung from the string, find

Question

If instead of the force F an actual mass m 0.590kg is hung from the string, find the angular acceleration of the cylinder. Use units of rad(s*s). Answer: Two particles, each with mass m 3.9 g, are fastened to each other and to a rotation axis at P, by two thin rods, each with length L 0.74 m and a mass of 8.2 g, as shown. The combination rotates around the rotation axis with an angular velocity of 11.0 rad/s. Find the rotational inertia of the combination about P. What is the kinetic energy associated with the rotation about P?

Explanation / Answer

The rotational inertia (angular momentum) is I*?, where I is the moment if inertia of the system about the axis of rotation. The moment of inertia of a system of mass elements mi is defined as ?mi*ri

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