Please circle the correct answer clearly! 1. A wooden rod is freely hanging from

Question

Please circle the correct answer clearly! 1. A wooden rod is freely hanging from a hook in the ceiling, and the rod is covered in flypaper. A fly, traveling horizontally, lands on the flypaper rod and sticks there. Which statement is true? A. the angular momentum of the system (fly and rod) is conserved about the hook because only gravity is acting on the system. B. the angular momentum of the system (fly and rod) is conserved about the hook because neither the hook nor gravity exerts any torque on this system about the hook. C. both the angular momentum of the system (fly and rod) and its kinetic energy are conserved. D. both the linear momentum and the angular momentum of the system (fly and rod) are conserved. E. the angular momentum of the system (fly and rod) is not conserved because the fly exerts a force on the rod. Hook

Explanation / Answer

ans

the angular momentum of the system is conserved about the hook because neither the hook nor gravity exerts any torque on this system about the hook

because the fly applies some force on the the rod so the rod create circular motion about one fixed point in the hook so the torque is devolped in the rod

because

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