Practice Problems
Normal Forces
Directions:
On this worksheet you will be asked to calculate the normal force depending on a variety of situations.
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Question 1
What is the normal force acting on a 6-kg mass that is at rest on a horizontal surface?
0 N
0.6 N
1.6 N
58.8 N
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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 6 m/sec
2
?
94.8 N
45.8 N
58.8 N
22.80 N
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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 m/sec
2
?
5.88 x 10
1
N
4.08 x 10
1
N
8.2 x 10
0
N
2.78 x 10
1
N
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Question 4
What is the normal force acting on a 6-kg mass that is being pulled up a 40º frictionless inclined plane at a constant velocity of 6 m/sec?
4.5 x 10
1
N
3.78 x 10
1
N
5.88 x 10
1
N
2.27 x 10
2
N
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Question 5
What is the normal force acting on a 6-kg mass which is being pulled at a constant velocity of 6 m/sec by a rope having a tension of 30 newtons at an angle of 40º to the horizontal?
39.5 N
58.8 N
35.8 N
78.1 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 6 m/sec by a force of 30 newtons along a rigid handle that makes an angle of 40º to the horizontal?
81.8 N
39.5 N
35.8 N
78.1 N
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