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 8-kg mass that is at rest on a horizontal surface?
78.4 N
1.2 N
0.8 N
0 N
omit
Question 2
What is the normal force acting on a 8-kg mass that is sitting on the floor of an elevator which is accelerating upwards at a rate of 8 m/sec
^{2}
?
14.40 N
73.8 N
78.4 N
142.4 N
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Question 3
What is the normal force acting on a 8-kg mass that is sitting on the floor of an elevator which is accelerating downwards at a rate of 4 m/sec
^{2}
?
4.18 x 10
^{1}
N
4.64 x 10
^{1}
N
2.22 x 10
^{1}
N
7.84 x 10
^{1}
N
omit
Question 4
What is the normal force acting on a 8-kg mass that is being pulled up a 31º frictionless inclined plane at a constant velocity of 8 m/sec?
3.23 x 10
^{2}
N
6.72 x 10
^{1}
N
4.04 x 10
^{1}
N
7.84 x 10
^{1}
N
omit
Question 5
What is the normal force acting on a 8-kg mass which is being pulled at a constant velocity of 8 m/sec by a rope having a tension of 29 newtons at an angle of 31º to the horizontal?
63.5 N
53.5 N
78.4 N
93.3 N
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Question 6
What is the normal force acting on a 8-kg mass which is being pushed at a constant velocity of 8 m/sec by a force of 29 newtons along a rigid handle that makes an angle of 31º to the horizontal?
63.5 N
103.3 N
93.3 N
53.5 N
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