9. A large box is pulled by a person with a force as shown in the figure. The angle 8 = 21°. What is the magnitude of kg and the coefficient of static friction the force that is needed to start the box moving if the mass of the box is m = 26.0 between the box and the floor is 0.47? sc2368 2 X 157 N 368 sc2208 sc236 sc2368 c2368 sc2368 sc2368 sv 2368 sc2568 sc2368 sc 26 sc2338 sc2368 sc2368 sco * 58 sc2368 68 sc2368 sc2368 sc2368

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”