Shown in the figure, two perpendicular rods of equal length 2d and negligible ma

Question

Shown in the figure, two perpendicular rods of equal length 2d and negligible masses are firmly connected to the middle of each other at point A. The rigid construction is at rest but can rotate around point A. The length d = 0.5 m. Four point like particles with masses m1 = 1 kg, m2 = 2 kg, m3 = 3 kg and m4 = 4 kg are attached to the ends of the rods as shown. A bullet with mass m = 0.2 kg and horizontal velocity V = 15 m/s hits the particle with mass m 3 and is embedded inside it after the collision. a) Find moment of inertia of the construction with respect to the point A before the collision. b) Find angular velocity w of the construction immediately after the collision. c) Find kinetic energy of the system (bullet + construction) before and immediately after the collision. (You may ignore the change of the moment of inertia of the construction after the collision.)

Explanation / Answer

figure pls

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