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 6-kg mass that is at rest on a horizontal surface?
1.6 N
0 N
0.6 N
58.8 N
omit
Question 2
What is the normal force acting on a 6-kg mass that is sitting on the floor of an elevator which is accelerating upwards at a rate of 7 m/sec
^{2}
?
100.8 N
16.80 N
58.8 N
51.8 N
omit
Question 3
What is the normal force acting on a 6-kg mass that is sitting on the floor of an elevator which is accelerating downwards at a rate of 3.5 m/sec
^{2}
?
5.88 x 10
^{1}
N
1.12 x 10
^{1}
N
3.08 x 10
^{1}
N
3.78 x 10
^{1}
N
omit
Question 4
What is the normal force acting on a 6-kg mass that is being pulled up a 25º frictionless inclined plane at a constant velocity of 7 m/sec?
5.88 x 10
^{1}
N
5.33 x 10
^{1}
N
1.74 x 10
^{2}
N
2.48 x 10
^{1}
N
omit
Question 5
What is the normal force acting on a 6-kg mass which is being pulled at a constant velocity of 7 m/sec by a rope having a tension of 39 newtons at an angle of 25º to the horizontal?
23.5 N
42.3 N
58.8 N
75.3 N
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Question 6
What is the normal force acting on a 6-kg mass which is being pushed at a constant velocity of 7 m/sec by a force of 39 newtons along a rigid handle that makes an angle of 25º to the horizontal?
75.3 N
23.5 N
94.1 N
42.3 N
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