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 2-kg mass that is at rest on a horizontal surface?
19.6 N
0 N
0.2 N
4.9 N
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Question 2
What is the normal force acting on a 2-kg mass that is sitting on the floor of an elevator which is accelerating upwards at a rate of 10 m/sec
2
?
19.6 N
29.8 N
39.6 N
0.40 N
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Question 3
What is the normal force acting on a 2-kg mass that is sitting on the floor of an elevator which is accelerating downwards at a rate of 5 m/sec
2
?
9.6 x 10
0
N
2 x 10
-1
N
1.96 x 10
1
N
1.98 x 10
1
N
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Question 4
What is the normal force acting on a 2-kg mass that is being pulled up a 35º frictionless inclined plane at a constant velocity of 10 m/sec?
1.12 x 10
1
N
1.96 x 10
1
N
1.12 x 10
2
N
1.61 x 10
1
N
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Question 5
What is the normal force acting on a 2-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 35º to the horizontal?
-13.2 N
-3.3 N
19.6 N
42.5 N
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Question 6
What is the normal force acting on a 2-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 35º to the horizontal?
-13.2 N
42.5 N
52.4 N
-3.3 N
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