Inquiry Into Physics
8th Edition
ISBN: 9781305959422
Author: Ostdiek, Vern J.
Publisher: Cengage Learning,
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Question
Chapter 2, Problem 10C
To determine
If there is a contradiction between the two statements −“The gravitational force acting on a body is a constant” and “ The gravitational force increases as it gets closer to Earth”.
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Check out a sample textbook solutionStudents have asked these similar questions
You drill a hole right through the center of a spherical planet of radius R and mass M, and drop an
object into it. How long does the object take to reach the opposite surface. Express your answer
only in terms of M, R and the universal gravitational constant G.
(a) State Newton's law of gravitation in word form.
(b) Use the law to show that that the escape velocity for a planet is given by the
expression v = 2go R. You can assume that the gravitational potential per unit
-GM
where
mass U, at the surface of the planet, is given by the expression U =
R
M and R are the mass and radius of the planet.
(c) Assuming that the Earth is a uniform sphere of radius 6.4 x 10 m and mass
6.0 x 1024 kg, calculate:
(i)
the gravitational potential at the surface of the Earth and
(ii)
the gravitational potential at a point 6.0 x 105 m above the surface of the
Earth.
(d) A 5 kg mass is to be delivered to a point in space where the gravitational effect on
the mass is negligible. Calculate:
(i)
the escape velocity for the mass.
(iii)
the work done in taking the mass to a point 6.0 x 105 m above the
surface of the Earth.
(iii)
the work needed to deliver the mass to the point where the gravitational
potential is zero.
Imagine that you are an astronaut on a newly discovered planet. You discover information that gives you the planet’s mass and radius. How could you confirm that the gravitational constant G is the same there as on Earth?
Chapter 2 Solutions
Inquiry Into Physics
Ch. 2 - Give three important “laws” that characterize...Ch. 2 - Describe the adhesion model of friction.Ch. 2 - Prob. 1MACh. 2 - Name a key invention that Newton contributed to...Ch. 2 - What important mathematical “tool” did Newton...Ch. 2 - Reread Section 2.7 on the law of universal...Ch. 2 - In this chapter, you've encountered a large number...Ch. 2 - (Indicates a review question. which means it...Ch. 2 - Prob. 2QCh. 2 - (Indicates a review question, which means it...
Ch. 2 - (Indicates a review question. which means it...Ch. 2 - Prob. 5QCh. 2 - (Indicates a review question. which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - (Indicates a review question. which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - (Indicates a review question. which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - (Indicates a review question. which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - Prob. 14QCh. 2 - Prob. 15QCh. 2 - Prob. 16QCh. 2 - (Indicates a review question. which means it...Ch. 2 - Prob. 18QCh. 2 - Prob. 19QCh. 2 - Prob. 20QCh. 2 - (Indicates a review question. which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - (Indicates a review question. which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - Prob. 25QCh. 2 - Prob. 26QCh. 2 - Prob. 27QCh. 2 - (Indicates a review question, which means it...Ch. 2 - Prob. 29QCh. 2 - (Indicates a review question. which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - Express your weight in newtons. From this...Ch. 2 - A child weighs 300 N. What is the child’s mass in...Ch. 2 - Suppose au airline allows a maximum of 30 kg for...Ch. 2 - The mass of a certain elephant is 1,130 kg. (a)...Ch. 2 - The mass of a subway car and passenger is 40,000...Ch. 2 - A motorcycle and rider have a total mass equal to...Ch. 2 - As a 2-kg ball rolls down a ramp, the net force on...Ch. 2 - In an experiment performed in a space station, a...Ch. 2 - The engines in a supertanker carrying crude oil...Ch. 2 - . The Kingda Ka roller coaster in New Jersey is...Ch. 2 - . A person stands on a scale inside an elevator at...Ch. 2 - . A jet aircraft with a mass of 4,500 kg has an...Ch. 2 - . At the end of Section 1.4, we mentioned that the...Ch. 2 - . A sprinter with a mass of 80 kg accelerates...Ch. 2 - . As a baseball is being caught, its speed goes...Ch. 2 - . On aircraft carriers, catapults are used to...Ch. 2 - . At the end of an amusement park ride, it is...Ch. 2 - . An airplane is built to withstand a maximum...Ch. 2 - . Under certain conditions, the human body can...Ch. 2 - . A race car rounds a curve at 60 m/s. The radius...Ch. 2 - . A hang glider and its pilot have a total mass...Ch. 2 - . A 0.1-kg ball is attached to a string and...Ch. 2 - On a highway curve with radius 50 m, the maximum...Ch. 2 - . A centripetal force of 200 N acts on a 1,000-kg...Ch. 2 - . As a spacecraft approaches a planet, the rocket...Ch. 2 - . A space probe is launched from Earth headed for...Ch. 2 - . A hand exerciser utilizes a coiled spring. A...Ch. 2 - . A mass of 0.75 kg is attached to a relaxed...Ch. 2 - The force on a baseball as with a bat can be more...Ch. 2 - Two forces, one equal to 15 N and another equal to...Ch. 2 - Why does banking a curve on a highway allow a...Ch. 2 - As a horse and wagon are accelerating From rest,...Ch. 2 - Prob. 5CCh. 2 - Perhaps you’ve noticed that the rockets used to...Ch. 2 - Prob. 7CCh. 2 - Prob. 8CCh. 2 - Prob. 9CCh. 2 - Prob. 10C
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- It was stated that a satellite with negative total energy is in a bound orbit, whereas one with zero or positive total energy is in an unbounded orbit. Why zero or positive total energy is in an unbounded orbit. Why is this true? What choice for gravitational potential energy was made such that this is true?arrow_forwardNear a massive planet, is gravitational acceleration large or small? Is space strongly curved, or not? What about near a small marble?arrow_forwardFollowing the technique used in Gravitation Near Earth’s Surface, find the value of g as a function of the radius r from the center of a spherical shell planet of constant density with inner and outer radii Rin and Rout . Find g for both eq and for RinrRout . Assuming the inside of the shell is kept airless, describe travel inside the spherical shell planet.arrow_forward
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