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?
0.9 N
88.2 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 5 m/sec
^{2}
?
54.8 N
88.2 N
133.2 N
43.20 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 2.5 m/sec
^{2}
?
8.82 x 10
^{1}
N
3.23 x 10
^{1}
N
1.27 x 10
^{1}
N
6.57 x 10
^{1}
N
omit
Question 4
What is the normal force acting on a 9-kg mass that is being pulled up a 32º frictionless inclined plane at a constant velocity of 5 m/sec?
4.67 x 10
^{1}
N
8.82 x 10
^{1}
N
7.48 x 10
^{1}
N
2.34 x 10
^{2}
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 5 m/sec by a rope having a tension of 30 newtons at an angle of 32º to the horizontal?
62.8 N
72.3 N
88.2 N
104.1 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 5 m/sec by a force of 30 newtons along a rigid handle that makes an angle of 32º to the horizontal?
104.1 N
72.3 N
62.8 N
113.6 N
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