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 5-kg mass that is at rest on a horizontal surface?
49.0 N
0 N
2.0 N
0.5 N
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Question 2
What is the normal force acting on a 5-kg mass that is sitting on the floor of an elevator which is accelerating upwards at a rate of 9 m/sec
2
?
54.8 N
49 N
94 N
4.00 N
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Question 3
What is the normal force acting on a 5-kg mass that is sitting on the floor of an elevator which is accelerating downwards at a rate of 4.5 m/sec
2
?
1.27 x 10
1
N
2.65 x 10
1
N
4.9 x 10
1
N
3.23 x 10
1
N
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Question 4
What is the normal force acting on a 5-kg mass that is being pulled up a 26º frictionless inclined plane at a constant velocity of 9 m/sec?
2.15 x 10
1
N
4.4 x 10
1
N
1.93 x 10
2
N
4.9 x 10
1
N
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Question 5
What is the normal force acting on a 5-kg mass which is being pulled at a constant velocity of 9 m/sec by a rope having a tension of 46 newtons at an angle of 26º to the horizontal?
69.2 N
7.7 N
49.0 N
28.8 N
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Question 6
What is the normal force acting on a 5-kg mass which is being pushed at a constant velocity of 9 m/sec by a force of 46 newtons along a rigid handle that makes an angle of 26º to the horizontal?
90.3 N
7.7 N
69.2 N
28.8 N
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