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Name: A body weighs 72 N on the surface of the earth. Calculate the gravita
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Description: A body weighs 72 N on the surface of the earth. Calculate the gravitational force on itdue to the earth at a height equal to half of radius of the earth.

Science

Physics

A body weighs 72 N on the surface of the earth. Calculate the gravitational force on it due to the earth at a height equal to half of radius of the earth.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter5: Newton's Laws Of Motion

Section: Chapter Questions

Problem 34PQ: A 15.0-kg object is in free fall near the surface of the Earth. What is its weight? What is its...

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Check Your Understanding There is another consideration to this last calculation of ME. We derived Equation 13.8 assuming that the satellite orbits around the center of the astronomical body at the same radius used in the expression for the gravitational force between them. What assumption is made to justify this? Earth is about 81 times more massive than the Moon. Does the Moon orbit about the exact center of Earth? Which is about 17,000 mph. Using Equation 13.8, the period is T=2r3GME=2( 6.37 10 6+4.00 10 5m)3(6.67 10 11N m 2 /kg 2)(5.96 10 24kg)=5.55103s