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 7 m/sec
^{2}
?
22.40 N
78.4 N
134.4 N
65.8 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 3.5 m/sec
^{2}
?
3.78 x 10
^{1}
N
1.82 x 10
^{1}
N
5.04 x 10
^{1}
N
7.84 x 10
^{1}
N
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Question 4
What is the normal force acting on a 8-kg mass that is being pulled up a 33º frictionless inclined plane at a constant velocity of 7 m/sec?
2.99 x 10
^{2}
N
4.27 x 10
^{1}
N
7.84 x 10
^{1}
N
6.58 x 10
^{1}
N
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Question 5
What is the normal force acting on a 8-kg mass which is being pulled at a constant velocity of 7 m/sec by a rope having a tension of 45 newtons at an angle of 33º to the horizontal?
53.9 N
102.9 N
78.4 N
40.7 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 7 m/sec by a force of 45 newtons along a rigid handle that makes an angle of 33º to the horizontal?
40.7 N
102.9 N
53.9 N
116.1 N
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