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 7-kg mass that is at rest on a horizontal surface?
0 N
1.4 N
0.7 N
68.6 N
omit
Question 2
What is the normal force acting on a 7-kg mass that is sitting on the floor of an elevator which is accelerating upwards at a rate of 7 m/sec
^{2}
?
19.60 N
117.6 N
68.6 N
58.8 N
omit
Question 3
What is the normal force acting on a 7-kg mass that is sitting on the floor of an elevator which is accelerating downwards at a rate of 3.5 m/sec
^{2}
?
6.86 x 10
^{1}
N
1.47 x 10
^{1}
N
4.41 x 10
^{1}
N
3.43 x 10
^{1}
N
omit
Question 4
What is the normal force acting on a 7-kg mass that is being pulled up a 32º frictionless inclined plane at a constant velocity of 7 m/sec?
2.54 x 10
^{2}
N
5.82 x 10
^{1}
N
3.64 x 10
^{1}
N
6.86 x 10
^{1}
N
omit
Question 5
What is the normal force acting on a 7-kg mass which is being pulled at a constant velocity of 7 m/sec by a rope having a tension of 38 newtons at an angle of 32º to the horizontal?
48.5 N
68.6 N
36.4 N
88.7 N
omit
Question 6
What is the normal force acting on a 7-kg mass which is being pushed at a constant velocity of 7 m/sec by a force of 38 newtons along a rigid handle that makes an angle of 32º to the horizontal?
48.5 N
36.4 N
100.8 N
88.7 N
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