Section 7.5 Newtonian Gravitation 29. The average distance separating Earth and the Moon is 384 000 km. Use the data in Table 7.3 to find the net gravitational force exerted by Earth and the Moon on a e 3.00 X 104-kg spaceship located halfway between them. a 30. During a solar eclipse, the Moon, Earth, and Sun all lie on the same line, with the Moon between Earth and the Sun. (a) What force is exerted by the Sun on the Moon? i- (b) What force is exerted by Earth on the Moon? a (c) What force is exerted by the Sun on Earth? (See Table d 7.3 and Problem 29.) b- 31. A coordinate system (in meters) is constructed on the sur- is face of a pool table, and three objects are placed on the ce table as follows: a 2.0-kg object at the origin of the coordi- nate system, a 3.0-kg object at (0, 2.0), and a 4.0-kg object at (4.0, 0). Find the resultant gravitational force exerted by the other two objects on the object at the origin. 32. Use the data of Table 7.3 to find the point between Earth and the Sun at which an object can be placed so that the net gravitational force exerted by Earth and the Sun on that object is zero. 33. Objects with masses of 200 kg and 500 kg are separated by 0.400 m. (a) Find the net gravitational force exerted by these objects on a 50.0-kg object placed midway between them. (b) At what position (other than infinitely remote ones) can the 50.0-kg object be placed so as to experience a net force of zero? . 17 0815 34. Two objects attract each other with a gravitational force of magnitude 1.00 X 10 8 N when separated by 20.0 cm. If er the total mass of the objects is 5.00 kg, what is the mass of t- each? S . th Section 7.6 Kepler's Laws