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
0.8 N
0 N
1.2 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 9 m/sec
^{2}
?
6.40 N
150.4 N
78.4 N
81.8 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 4.5 m/sec
^{2}
?
2.62 x 10
^{1}
N
4.58 x 10
^{1}
N
7.84 x 10
^{1}
N
4.24 x 10
^{1}
N
omit
Question 4
What is the normal force acting on a 8-kg mass that is being pulled up a 25º frictionless inclined plane at a constant velocity of 9 m/sec?
2.98 x 10
^{2}
N
7.11 x 10
^{1}
N
3.31 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 9 m/sec by a rope having a tension of 36 newtons at an angle of 25º to the horizontal?
93.6 N
78.4 N
45.8 N
63.2 N
omit
Question 6
What is the normal force acting on a 8-kg mass which is being pushed at a constant velocity of 9 m/sec by a force of 36 newtons along a rigid handle that makes an angle of 25º to the horizontal?
93.6 N
111.0 N
45.8 N
63.2 N
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