Answered: Provide a classical explanation for an…

Stars and Galaxies

9th Edition

ISBN:9781305120785

Author:Michael A. Seeds, Dana Backman

Publisher:Michael A. Seeds, Dana Backman

Chapter5: Gravity

Section: Chapter Questions

Problem 5DQ

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Provide a classical explanation for an astronaut in an orbiting spacecraft experiencing no net force (as measured by a weighing scale), even though the astronaut is in the grips of Earth gravity.

Expert Solution

Step 1

It is given that an astronaut in an orbiting spacecraft experiences no net force, even though the astronaut is in the grips of Earth’s gravity.

Step 2

This happened because they are weightless due to absence of any external contact force which is pushing or pulling on their body, as in the case of a free fall. They orbit in circular motion due to the presence of gravity only.

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