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
0.4 N
2.5 N
0 N
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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 5 m/sec
2
?
29.8 N
39.2 N
19.20 N
59.2 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 2.5 m/sec
2
?
2.92 x 10
1
N
1.98 x 10
1
N
3.92 x 10
1
N
2 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 37º frictionless inclined plane at a constant velocity of 5 m/sec?
2.36 x 10
1
N
1.18 x 10
2
N
3.92 x 10
1
N
3.13 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 5 m/sec by a rope having a tension of 43 newtons at an angle of 37º to the horizontal?
39.2 N
65.1 N
13.3 N
4.9 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 5 m/sec by a force of 43 newtons along a rigid handle that makes an angle of 37º to the horizontal?
13.3 N
4.9 N
65.1 N
73.5 N
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