Practice Problems
Gravitational Fields and Forces
Directions:
On this worksheet you will examine the properties of gravitational forces and fields.
omit
Question 1
Two masses, 3 kg and 7 kg, initially at rest, are both released and fall freely to the ground. Which mass would experience the greater acceleration while falling?
3 kg
both masses experience the same acceleration
7 kg
omit
Question 2
When initially released, which mass experienced the greater gravitational force of attraction to the earth?
both masses experience the same gravitational force of attraction
7 kg
3 kg
omit
Question 3
When initially released, which mass weighed more in the earth's gravitational field?
7 kg
both masses weighed the same
3 kg
omit
Question 4
If when both masses impact the earth their centers land 3.053 meters apart, what is the gravitational force exerted on the small mass by the larger mass?
1.67 x 10
^{-11}
N
7.16 x 10
^{-11}
N
2.86 x 10
^{-11}
N
1.5 x 10
^{-10}
N
omit
Question 5
On the surface of Planet X a 43-kg mass weighs 983.3 N. What is the local value of Planet X's gravitational field strength?
13.1 N/kg
100.3 N/kg
22.9 N/kg
0.044 N/kg
omit
Question 6
If Planet X has the same radius as the Earth, what is the mass of Planet X? If needed, the mass of the Earth is 5.98 x 10
^{24}
kg.
1.4 x 10
^{25}
kg
1.34 x 10
^{27}
kg
2.56 x 10
^{24}
kg
1.37 x 10
^{26}
kg
omit
Question 7
If the 43-kg mass is moved to a position which is 7.1 radii above the surface of Planet X, how will its weight be affected?
its weight will be increased by a factor of 71 / 10
its weight will be decreased by a factor of 100 / 5041
its weight will be increased by a factor of 5041 / 100
its weight will be decreased by a factor of 10 / 71
omit
Question 8
When released from rest an object in freefall and tracked by a motion detector, which of the following position-time graphs will be displayed?
omit
Question 9
When released from rest an object in freefall and tracked by a motion detector, which of the following velocity-time graphs will be displayed?
PhysicsLAB
Copyright © 1997-2020
Catharine H. Colwell
All rights reserved.
Application Programmer
Mark Acton