Exam II Review Lecture 15.

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Presentation transcript:

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 Find C = A + B 200 m A 450 250 B 300

Find T1 and T2 Mass = 25kg T2 T1 650 500

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?

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

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