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okay thanks! Except l is changing with time as well based on where the mass is on the rod, so l = sqrt(l2 + r2)

Homework Statement A rigid “T” consists of a long rod glued perpendicular to another rod of length l that is pivoted at the origin. The T rotates around in a horizontal plane with constant frequency ω. A mass m is free to slide along the long rod and is connected to the intersection of the...