Conceptual Physics C2009 Guided Reading & Study Workbook Se
9th Edition
ISBN: 9780133647396
Author: Prentice Hall
Publisher: Prentice Hall
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Textbook Question
Chapter 14, Problem 7A
Why does gravitational force change the speed of a satellite in elliptical orbit?
Expert Solution & Answer
To determine
The cause of change in the speed of a satellite in elliptical orbit due to gravitational force.
Explanation of Solution
Introduction:
A force does some work on an object when the force has a component acting in the direction towards the motion of the object. Work done on object is zero when the force acts perpendicular to the direction of motion of the object.
When the satellite travels in an elliptical orbit, there is a component of gravitational force which acts towards the motion of the satellite and hence gravitational force does some work on the satellite and that way changes the kinetic energy of the satellite. So, the speed of the satellite changes.
Conclusion:
The speed of satellite changes because the component of gravitational force acting in the direction towards motion of the satellite does some work.
Chapter 14 Solutions
Conceptual Physics C2009 Guided Reading & Study Workbook Se
Ch. 14 - If we drop a ball from rest, how far will it fall...Ch. 14 - What do the distances 8000 m and 5 m have to do...Ch. 14 - How does the direction of motion of a satellite in...Ch. 14 - Why doesnt gravitational force change the speed of...Ch. 14 - Does the period of a satellite in a circular orbit...Ch. 14 - Describe an ellipse.Ch. 14 - Why does gravitational force change the speed of a...Ch. 14 - a. Where in an elliptical orbit is the speed of a...Ch. 14 - The sum of PE and KE for a satellite in a circular...Ch. 14 - Why does the force of gravity do no work on a...
Ch. 14 - What scientist gathered accurate data on planetary...Ch. 14 - Prob. 12ACh. 14 - What is the mathematical relationship between how...Ch. 14 - a. What is the minimum speed for circling Earth in...Ch. 14 - Neglecting air resistance, what will happen to a...Ch. 14 - a. How fast would a particle have to be ejected...Ch. 14 - Prob. 17ACh. 14 - Although the escape speed from the surface of...Ch. 14 - How was Pioneer 10 able to escape the solar system...Ch. 14 - The dashed lines show three circular orbits about...Ch. 14 - Four satellites in circular orbit about Earth have...Ch. 14 - The positions of a satellite in elliptical orbit...Ch. 14 - Kepler tells us that a planet sweeps out equal...Ch. 14 - A satellite can orbit at 5 km above the moon, but...Ch. 14 - Does the speed of a satellite around Earth depend...Ch. 14 - If a cannonball is fired from tall mountain,...Ch. 14 - Does gravity do any network on a satellite in an...Ch. 14 - A geosynchronous Earth satellite can remain almost...Ch. 14 - If you stopped an Earth satellite dead in its...Ch. 14 - In an accidental explosion, a satellite breaks in...Ch. 14 - Prob. 31ACh. 14 - Why do you suppose that sites close to the equator...Ch. 14 - Why do you suppose that a space shuttle is sent...Ch. 14 - Consider two planets: Mercury, close to the sun,...Ch. 14 - What is the maximum possible speed of impact upon...Ch. 14 - Why does most of the work done in launching a...Ch. 14 - If Pluto were somehow stopped short in its orbit,...Ch. 14 - If an astronaut in an orbiting space shuttle...Ch. 14 - If Earth somehow acquired more mass, with no...Ch. 14 - Calculate the speed in m/s at which Earth revolves...Ch. 14 - A spaceship in circular orbit about the moon is...Ch. 14 - Calculate the speed in m/s at which the moon...Ch. 14 - Prob. 43ACh. 14 - An orbiting satellite of mass m is pulled toward...Ch. 14 - The force of gravity between Earth and an Earth...Ch. 14 - Use the result of Question 45 (now with the sun...Ch. 14 - In 1610, Galileo discovered four moons of Jupiter....Ch. 14 - A planet in a circular orbit takes a time T to...Ch. 14 - Prob. 49ACh. 14 - Use the equation T=2r3GM to show that the period...
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