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 4-kg mass that is at rest on a horizontal surface?
39.2 N
2.5 N
0.4 N
0 N
omit
Question 2
What is the normal force acting on a 4-kg mass that is sitting on the floor of an elevator which is accelerating upwards at a rate of 9 m/sec
^{2}
?
45.8 N
3.20 N
39.2 N
75.2 N
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Question 3
What is the normal force acting on a 4-kg mass that is sitting on the floor of an elevator which is accelerating downwards at a rate of 4.5 m/sec
^{2}
?
2.78 x 10
^{1}
N
8.2 x 10
^{0}
N
3.92 x 10
^{1}
N
2.12 x 10
^{1}
N
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Question 4
What is the normal force acting on a 4-kg mass that is being pulled up a 36º frictionless inclined plane at a constant velocity of 9 m/sec?
2.07 x 10
^{2}
N
3.92 x 10
^{1}
N
2.3 x 10
^{1}
N
3.17 x 10
^{1}
N
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Question 5
What is the normal force acting on a 4-kg mass which is being pulled at a constant velocity of 9 m/sec by a rope having a tension of 40 newtons at an angle of 36º to the horizontal?
15.7 N
39.2 N
6.8 N
62.7 N
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Question 6
What is the normal force acting on a 4-kg mass which is being pushed at a constant velocity of 9 m/sec by a force of 40 newtons along a rigid handle that makes an angle of 36º to the horizontal?
15.7 N
71.6 N
6.8 N
62.7 N
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