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 5-kg mass that is at rest on a horizontal surface?
0.5 N
0 N
49.0 N
2.0 N
omit
Question 2
What is the normal force acting on a 5-kg mass that is sitting on the floor of an elevator which is accelerating upwards at a rate of 11 m/sec
^{2}
?
64.8 N
6.00 N
104 N
49 N
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Question 3
What is the normal force acting on a 5-kg mass that is sitting on the floor of an elevator which is accelerating downwards at a rate of 5.5 m/sec
^{2}
?
2.15 x 10
^{1}
N
4.9 x 10
^{1}
N
3.73 x 10
^{1}
N
1.77 x 10
^{1}
N
omit
Question 4
What is the normal force acting on a 5-kg mass that is being pulled up a 39º frictionless inclined plane at a constant velocity of 11 m/sec?
3.08 x 10
^{1}
N
3.81 x 10
^{1}
N
3.39 x 10
^{2}
N
4.9 x 10
^{1}
N
omit
Question 5
What is the normal force acting on a 5-kg mass which is being pulled at a constant velocity of 11 m/sec by a rope having a tension of 30 newtons at an angle of 39º to the horizontal?
67.9 N
49.0 N
30.1 N
25.7 N
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Question 6
What is the normal force acting on a 5-kg mass which is being pushed at a constant velocity of 11 m/sec by a force of 30 newtons along a rigid handle that makes an angle of 39º to the horizontal?
25.7 N
67.9 N
30.1 N
72.3 N
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