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3. At the playground, you pull an 18-kg sled across the floor with a strap that is at an angle of 0 = 60° above the horizontal and you also push on the sled with a force P = 1ON. Given that the sled moves at a constant speed and the coefficient of kinetic friction between the sled and the floor is = 0.38. (a) Find the Normal Force. (b) Find the Tension in the strap. (c) What happens in the limit when 0 goes to zero? Is it easier or harder to pull the sled? Show and Explain. (d) Now suppose the speed is not constant. What is the acceleration of the sled in terms of F, 0, µk and m Sketch and Label all the forces Define the coordinate axis for each mass.

3. At the playground, you pull an 18-kg sled across the floor with a strap that is at an angle of 0 = 60° above the horizontal and you also push on the sled with a force P = 1ON. Given that the sled moves at a constant speed and the coefficient of kinetic friction between the sled and the floor is = 0.38. (a) Find the Normal Force. (b) Find the Tension in the strap. (c) What happens in the limit when 0 goes to zero? Is it easier or harder to pull the sled? Show and Explain. (d) Now suppose the speed is not constant. What is the acceleration of the sled in terms of F, 0, µk and m Sketch and Label all the forces Define the coordinate axis for each mass.

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3. At the playground, you pull an 18-kg sled across the floor with a strap that is at an angle of 0 = 60° above the horizontal and you also push on the sled with a force P = 10N. Given that the sled moves at a constant speed and the coefficient of kinetic friction between the sled and the floor is H = 0.38. (a) Find the Normal Force. (b) Find the Tension in the strap. (c) What happens in the limit when 0 goes to zero? Is it easier or harder to pull the sled? Show and Explain. (d) Now suppose the speed is not constant. What is the acceleration of the sled in terms of F, 0, µk and m Sketch and Label all the forces Define the coordinate axis for each mass.
Transcribed Image Text:3. At the playground, you pull an 18-kg sled across the floor with a strap that is at an angle of 0 = 60° above the horizontal and you also push on the sled with a force P = 10N. Given that the sled moves at a constant speed and the coefficient of kinetic friction between the sled and the floor is H = 0.38. (a) Find the Normal Force. (b) Find the Tension in the strap. (c) What happens in the limit when 0 goes to zero? Is it easier or harder to pull the sled? Show and Explain. (d) Now suppose the speed is not constant. What is the acceleration of the sled in terms of F, 0, µk and m Sketch and Label all the forces Define the coordinate axis for each mass.
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