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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)

3.1 Changing forces (3)

3.2 Iterative prediction of motion (1)

3.3 Fundamental forces (0)

3.4 The gravitational force law (1)

3.5 Approximate gravitational force near the Earth's surface (1)

3.6 Predicting motion of gravitationally interacting objects (1)

3.7 Choosing a time step (0)

3.8 The electric force law: Coulomb's law (0)

3.9 Reciprocity (0)

3.10 Newton and Einstein (0)

3.11 Prediting the future of complex systems (0)

3.12 Determinism (0)

3.13 *Points and spheres (0)

3.14 *Measuring the gravitational constant G (0)

4 Contact Forces and the Momentum Principle (14)

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)

1350001 Gravitational field and the weight of an astronaut in the International Space Station. 1350001
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Question

The International Space Station orbits Earth at an altitude of about 350 km (from Earth's surface). What is the magnitude of Earth's gravitational field g at the altitude of the space station? What is the weight of a 90-kg astronaut who is in the space station? (Note weight in this case is defined as the gravitational force by Earth on the astronaut.)