Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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Two small
masses that are 10.0 cm apart attract each other with a force of 10.0 N. When they are 5.0 cm apart,
these masses will attract each other with what force?
(G = 6.673
´ 10–11
N·m2/kg2) a. | 5.0 N | c. | 20.0 N | b. | 2.5 N | d. | 40.0 N | | | | |
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2.
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The
gravitational force between two masses is 36 N. What is the gravitational force if the distance
between them is tripled? (G = 6.673 ´ 10–11 N·m2/kg2) a. | 18
N | c. | 4.0
N | b. | 9.0
N | d. | 27
N | | | | |
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3.
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What is the
gravitational force between two trucks, each with a mass of 2.0 ´ 104 kg,
that are 2.0 m apart? (G = 6.673 ´ 10–11 N·m2/kg2) a. | 5.7 ´ 10–2
N | c. | 6.7 ´ 10–3
N | b. | 1.2 ´ 10–7
N | d. | 1.3 ´ 10–2
N | | | | |
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Problem
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4.
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A 61 kg
student sits at a desk 1.25 m away from a 70.0 kg student. What is the magnitude of the gravitational
force between the two students?
(G = 6.673 ´ 10–11 N·m2/kg2)
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