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?
0 N
29.4 N
3.3 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 9 m/sec
^{2}
?
2.40 N
36.8 N
29.4 N
56.4 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 4.5 m/sec
^{2}
?
2.94 x 10
^{1}
N
3.7 x 10
^{0}
N
1.59 x 10
^{1}
N
2.33 x 10
^{1}
N
omit
Question 4
What is the normal force acting on a 3-kg mass that is being pulled up a 26º frictionless inclined plane at a constant velocity of 9 m/sec?
1.16 x 10
^{2}
N
2.94 x 10
^{1}
N
1.29 x 10
^{1}
N
2.64 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 9 m/sec by a rope having a tension of 37 newtons at an angle of 26º to the horizontal?
13.2 N
29.4 N
45.6 N
-3.9 N
omit
Question 6
What is the normal force acting on a 3-kg mass which is being pushed at a constant velocity of 9 m/sec by a force of 37 newtons along a rigid handle that makes an angle of 26º to the horizontal?
13.2 N
45.6 N
62.7 N
-3.9 N
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