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Newton’s Laws Problems

Newton’s Laws Problems. Example. Three kids are fighting over the same toy. One pulls the toy with a force of 20N (E), another pulls with a force of 15N (15 °N of W), and the third pull with 22N (5°W of S). a) Find the total force on the toy. b) What is the toy’s acceleration?. Example.

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Newton’s Laws Problems

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  1. Newton’s Laws Problems

  2. Example • Three kids are fighting over the same toy. One pulls the toy with a force of 20N (E), another pulls with a force of 15N (15°N of W), and the third pull with 22N (5°W of S). a) Find the total force on the toy. b) What is the toy’s acceleration?

  3. Example • A child pulls on a wooden toy attached to a string. The toy has a mass of 5kg and the child pull on the string with a force of 25N at an angle of 50° with the horizontal. Assuming no friction. a) Draw the free body diagram. b) Calculate the normal force. c) Determine the acceleration of the toy.

  4. Example • Working in his yard, a man pushes on a 50kg lawnmower. He exerts a force of 200N on the handle that makes and angle of 60° with the horizontal. a) Draw the free body diagram. b) Determine the Normal force. c) Find the acceleration of the mower.

  5. Example • A 65kg man is standing on a bathroom scale in an elevator. What will the scale read when, a) the elevator is at rest b) the elevator accelerates up at 3.0 m/s2 c) the elevator accelerates down at 3.0 m/s2

  6. Example • A .75kg mass is at rest on a frictionless, horizontal table. It is connected by a light string running over a pulley to a hanging .50kg mass. a) Draw the free body diagram b) Calculate the acceleration of the mass.

  7. Example • A 3.0kg mass is resting on a frictionless incline of 30°. It is connected by a light string running over a pulley to a hanging mass of 2.0kg. a) What is the tension on the string? b) What is the acceleration of the mass?

  8. Example A 10 kg box is placed at the top of a frictionless ramp with an angle of 30o with the horizontal. Calculate the acceleration of the box down the ramp.

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