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?
1.2 N
78.4 N
0 N
0.8 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
omit
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}
?
4.64 x 10
^{1}
N
7.84 x 10
^{1}
N
2.22 x 10
^{1}
N
4.18 x 10
^{1}
N
omit
Question 4
What is the normal force acting on a 8-kg mass that is being pulled up a 38º frictionless inclined plane at a constant velocity of 8 m/sec?
3.86 x 10
^{2}
N
7.84 x 10
^{1}
N
6.18 x 10
^{1}
N
4.83 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 44 newtons at an angle of 38º to the horizontal?
78.4 N
51.3 N
43.7 N
105.5 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 44 newtons along a rigid handle that makes an angle of 38º to the horizontal?
51.3 N
105.5 N
43.7 N
113.1 N
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