A light, rigid rod of length ℓ = 1.00 m joins two particles, with masses  m1 = 4.00 kg and m2 = 3.00 kg, at its ends. The combination rotates in the xy-plane about a pivot through the center of the rod (see figure below). Determine the angular momentum of the system about the origin when the speed of each particle is 6.20 m/s. (Enter the magnitude to at least two decimal places in kg · m2/s.)   What If? What would be the new angular momentum of the system (in kg · m2/s) if each of the masses were instead a solid sphere 11.5 cm in diameter? (Round your answer to at least two decimal places.)

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Chapter1: Units, Trigonometry. And Vectors
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A light, rigid rod of length ℓ = 1.00 m joins two particles, with masses 

m1 = 4.00 kg and m2 = 3.00 kg, at its ends. The combination rotates in the xy-plane about a pivot through the center of the rod (see figure below). Determine the angular momentum of the system about the origin when the speed of each particle is 6.20 m/s. (Enter the magnitude to at least two decimal places in kg · m2/s.)
 
What If? What would be the new angular momentum of the system (in kg · m2/s) if each of the masses were instead a solid sphere 11.5 cm in diameter? (Round your answer to at least two decimal places.)
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