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 3-kg mass that is at rest on a horizontal surface?
29.4 N
3.3 N
0.3 N
0 N
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Question 2
What is the normal force acting on a 3-kg mass that is sitting on the floor of an elevator which is accelerating upwards at a rate of 10 m/sec
2
?
29.4 N
0.60 N
39.8 N
59.4 N
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Question 3
What is the normal force acting on a 3-kg mass that is sitting on the floor of an elevator which is accelerating downwards at a rate of 5 m/sec
2
?
2.48 x 10
1
N
5.2 x 10
0
N
1.44 x 10
1
N
2.94 x 10
1
N
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Question 4
What is the normal force acting on a 3-kg mass that is being pulled up a 37º frictionless inclined plane at a constant velocity of 10 m/sec?
1.77 x 10
2
N
2.94 x 10
1
N
1.77 x 10
1
N
2.35 x 10
1
N
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Question 5
What is the normal force acting on a 3-kg mass which is being pulled at a constant velocity of 10 m/sec by a rope having a tension of 40 newtons at an angle of 37º to the horizontal?
53.5 N
5.3 N
29.4 N
-2.5 N
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Question 6
What is the normal force acting on a 3-kg mass which is being pushed at a constant velocity of 10 m/sec by a force of 40 newtons along a rigid handle that makes an angle of 37º to the horizontal?
5.3 N
61.3 N
-2.5 N
53.5 N
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