A man wants to accelerate a child on a sled. The combined mass of the child and the sled is 30.0 kg, and the coefficient of kinetic friction between the snow and the sled is 0.150. In case (1), the man applies a force of 200.0 Newtons at an angle of 30.0˚ below the horizontal. In case (2), he applies the same force at an angle of 30.0˚above the horizontal. What is the acceleration of the sled in each case?

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Q: A child pulls on a wagon handle at an angle 37° above the horizontal with a force of 45 N. If the…

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Q: In the figure, a slab of mass m1 = 44 kg rests on a frictionless floor, and a block of mass m2 = 9…

A:

Q: A 3.230 kg block of wood rests on a steel desk. The coefficient of static friction between the block…

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Q: In a figure, m1 = 10.4 kg and m2 = 4.3 kg. The coefficient of static friction between m1 and…

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Q: In the figure, the block of mass m is at rest on the inclined plane. Which of the following is true?…

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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?”