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Exam II Review

Exam II Review. Lecture 15. Review Problem. Macie pulls a 40 kg rolling trunk by a strap angled at 30° from the horizontal. She pulls with a force of 40 N, and there is a 30 N rolling friction force acting on trunk. What is the trunk’s acceleration?. Slide 5-17. Vector Addition.

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Exam II Review

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  1. Exam II Review Lecture 15

  2. Review Problem Macie pulls a 40 kg rolling trunk by a strap angled at 30° from the horizontal. She pulls with a force of 40 N, and there is a 30 N rolling friction force acting on trunk. What is the trunk’s acceleration? Slide 5-17

  3. Vector Addition • Find C = A + B 200 m A 450 250 B 300

  4. Find T1 and T2 • Mass = 25kg T2 T1 650 500

  5. Problem • 5:24 A 23kg child on slide inclined at 380. • What forces act on child? • Make a free body diagram • Magnitude of normal force? • If the coefficient of static friction is 0.62, will the child start to slide?

  6. Projectile Motion • How far down range does the 10kg projectile travel? 400

  7. Review Session tomorrow, Tuesday, 6:00-8:30pm. I will answer questions. No presentation.

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