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Chapter 13: Q. 6 (page 353)
The free-fall acceleration at the surface of planet 1 is 20 m/s2. The radius and the mass of planet 2 are twice those of planet 1. What is g on planet 2?
The value of g on planet 2 is : 10 m/s2
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FIGURE CP13.72 shows a particle of mass m at distance x from the center of a very thin cylinder of mass M and length L. The particle is outside the cylinder, so x > L/2.
a. Calculate the gravitational potential energy of these two masses.
b. Use what you know about the relationship between force and potential energy to find the magnitude of the gravitational force on m when it is at position x.
A satellite orbiting the earth is directly over a point on the equator at 12:00 midnight every two days. It is not over that point at any time in between. What is the radius of the satellite鈥檚 orbit?
In Problems 64 through 66 you are given the equation(s) used to
solve a problem. For each of these, you are to
a. Write a realistic problem for which this is the correct equation(s).
b. Draw a pictorial representation.
c. Finish the solution of the problem.
Twolead spheres are suspended from -long massless cables. The tops of the cables have been carefully anchored exactly apart. By how much is the distance between the centers of the spheres less than
Two Jupiter-size planets are released from rest 1.0 x 1011m apart. What are their speeds as they crash together?
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