Exam II Review

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# Exam II Review - PowerPoint PPT Presentation

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

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

• 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