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 3-kg mass that is at rest on a horizontal surface?
3.3 N
29.4 N
0 N
0.3 N
omit
Question 2
What is the normal force acting on a 3-kg mass that is sitting on the floor of an elevator which is accelerating upwards at a rate of 8 m/sec
^{2}
?
29.4 N
5.40 N
53.4 N
33.8 N
omit
Question 3
What is the normal force acting on a 3-kg mass that is sitting on the floor of an elevator which is accelerating downwards at a rate of 4 m/sec
^{2}
?
2.2 x 10
^{0}
N
2.94 x 10
^{1}
N
1.74 x 10
^{1}
N
2.18 x 10
^{1}
N
omit
Question 4
What is the normal force acting on a 3-kg mass that is being pulled up a 25º frictionless inclined plane at a constant velocity of 8 m/sec?
2.94 x 10
^{1}
N
9.94 x 10
^{1}
N
1.24 x 10
^{1}
N
2.66 x 10
^{1}
N
omit
Question 5
What is the normal force acting on a 3-kg mass which is being pulled at a constant velocity of 8 m/sec by a rope having a tension of 38 newtons at an angle of 25º to the horizontal?
-5.0 N
13.3 N
45.5 N
29.4 N
omit
Question 6
What is the normal force acting on a 3-kg mass which is being pushed at a constant velocity of 8 m/sec by a force of 38 newtons along a rigid handle that makes an angle of 25º to the horizontal?
45.5 N
63.8 N
13.3 N
-5.0 N
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