16 Two identical spheres are attached to opposite ends of a thin rod of negligible mass, as shown in the figure. The spheres-rod system is thrown straight upward and is rotating counterclockwise as it moves through the air. Which of the following is correct about the angular momentum of the spheres-rod system while it is in the air? What is a valid justification? А The angular momentum remains constant because there is never a net torque acting on the system. B The angular momentum remains constant because there is a changing net torque acting on the system that averages to zero over time. The angular momentum constantly decreases because there is a constant net torque acting on the system. The angular momentum constantly increases because there is a constant net torque acting on the system.
Answers: 3
Physics, 21.06.2019 22:50, Scp049
As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.
Answers: 1
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