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 4-kg mass that is at rest on a horizontal surface?
39.2 N
0 N
2.5 N
0.4 N
omit
Question 2
What is the normal force acting on a 4-kg mass that is sitting on the floor of an elevator which is accelerating upwards at a rate of 11 m/sec
^{2}
?
4.80 N
83.2 N
53.8 N
39.2 N
omit
Question 3
What is the normal force acting on a 4-kg mass that is sitting on the floor of an elevator which is accelerating downwards at a rate of 5.5 m/sec
^{2}
?
3.18 x 10
^{1}
N
1.22 x 10
^{1}
N
1.72 x 10
^{1}
N
3.92 x 10
^{1}
N
omit
Question 4
What is the normal force acting on a 4-kg mass that is being pulled up a 28º frictionless inclined plane at a constant velocity of 11 m/sec?
2.02 x 10
^{2}
N
3.46 x 10
^{1}
N
3.92 x 10
^{1}
N
1.84 x 10
^{1}
N
omit
Question 5
What is the normal force acting on a 4-kg mass which is being pulled at a constant velocity of 11 m/sec by a rope having a tension of 42 newtons at an angle of 28º to the horizontal?
19.5 N
39.2 N
58.9 N
2.1 N
omit
Question 6
What is the normal force acting on a 4-kg mass which is being pushed at a constant velocity of 11 m/sec by a force of 42 newtons along a rigid handle that makes an angle of 28º to the horizontal?
19.5 N
2.1 N
76.3 N
58.9 N
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