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Matter & Interactions 2nd ed. Practice Problems	Aaron Titus \| High Point University
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I. Modern Mechanics (89)

1 Interactions and Motion (21)

2 The Momentum Principle: Impulse and Momentum Change (18)

3 The Momentum Principle: Non-constant Forces (7)

4 Contact Forces and the Momentum Principle (14)

4.1 Tarzan and the vine (0)

4.2 A model of a solid: Balls connected by springs (0)

4.3 Tension forces (1)

4.4 Length of an interatomic bond (1)

4.5 The stiffness of an interactomic bond (3)

4.6 Stress, strain, and Young's modulus (0)

4.7 Compresssion (normal) forces (1)

4.8 Contact forces and the Momentum Principle (0)

4.9 Derivative form of the Momentum Principle (0)

4.10 Momentum not changing (Statics) (1)

4.11 Finding the rate of change of momentum (0)

4.12 Parallel and perpendicular components (0)

4.13 Why does the vine break? (3)

4.14 Speed of sound in a solid and interatomic bond stiffness (0)

4.15 Analytical solution: spring-mass system (1)

4.16 Analytical expression for speed of sound (0)

4.17 Contact forces due to gases (2)

4.18 *More curving motion examples (1)

4.19 *A vertical spring-mass system (0)

4.20 *General solution for the mass-spring system (0)

5 The Energy Principle (11)

6 Energy in Macroscopic Systems (5)

7 Energy Quantization (2)

8 Multiparticle Systems (3)

9 Collisions (2)

10 Angular Momentum (6)

11 Entropy: Limits on the Possible (0)

12 Gases and Engines (0)

1470001 Normal force on a girl sliding down a waterslide 1470001
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Question

Wet 'n Wild has a waterslide called Daredevil Drop. At the steepest part of the slide, the angle is about . A girl goes down the slide. Her mass is 40 kg and the frictional force of the slide on her at its steepest angle at is 20 N. What is the normal (compression) component of the force by the slide on the girl? What is the girl's acceleration? What is the fundamental cause of the normal force by the slide on the girl?