Practice Problems
Normal Forces
Directions:
On this worksheet you will be asked to calculate the normal force depending on a variety of situations.
omit
Question 1
What is the normal force acting on a 9-kg mass that is at rest on a horizontal surface?
88.2 N
0.9 N
1.1 N
0 N
omit
Question 2
What is the normal force acting on a 9-kg mass that is sitting on the floor of an elevator which is accelerating upwards at a rate of 7 m/sec
^{2}
?
88.2 N
25.20 N
151.2 N
72.8 N
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Question 3
What is the normal force acting on a 9-kg mass that is sitting on the floor of an elevator which is accelerating downwards at a rate of 3.5 m/sec
^{2}
?
4.13 x 10
^{1}
N
8.82 x 10
^{1}
N
2.17 x 10
^{1}
N
5.67 x 10
^{1}
N
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Question 4
What is the normal force acting on a 9-kg mass that is being pulled up a 35º frictionless inclined plane at a constant velocity of 7 m/sec?
8.82 x 10
^{1}
N
3.54 x 10
^{2}
N
5.06 x 10
^{1}
N
7.22 x 10
^{1}
N
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Question 5
What is the normal force acting on a 9-kg mass which is being pulled at a constant velocity of 7 m/sec by a rope having a tension of 36 newtons at an angle of 35º to the horizontal?
108.8 N
67.6 N
88.2 N
58.7 N
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Question 6
What is the normal force acting on a 9-kg mass which is being pushed at a constant velocity of 7 m/sec by a force of 36 newtons along a rigid handle that makes an angle of 35º to the horizontal?
108.8 N
117.7 N
67.6 N
58.7 N
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