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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

An Earth satellite is in a circular orbit at an altitude of 500 km. Explain why the work done by the gravitational force acting on the satellite is zero. Using the work-energy theorem, what can you say about the speed of the satellite?

To determine

Why the work done by the gravitational force acting on the satellite is zero.

Explanation

the work done for a constant force is,

    W=Fd

  • F is the constant force
  • d is the displacement vector

Consider the case of a satellite moving in a circular orbit. The force vector of the satellite will always be directed radially inward to the center of the planet to which the satellite is orbiting

To determine

The speed of the satellite using Work-Energy theorem.

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