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
49.0 N
2.0 N
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 8 m/sec
^{2}
?
49.8 N
49 N
89 N
9.00 N
omit
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 4 m/sec
^{2}
?
2.9 x 10
^{1}
N
2.98 x 10
^{1}
N
1.02 x 10
^{1}
N
4.9 x 10
^{1}
N
omit
Question 4
What is the normal force acting on a 5-kg mass that is being pulled up a 30º frictionless inclined plane at a constant velocity of 8 m/sec?
2.45 x 10
^{1}
N
4.9 x 10
^{1}
N
1.96 x 10
^{2}
N
4.24 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 8 m/sec by a rope having a tension of 41 newtons at an angle of 30º to the horizontal?
49.0 N
69.5 N
13.5 N
28.5 N
omit
Question 6
What is the normal force acting on a 5-kg mass which is being pushed at a constant velocity of 8 m/sec by a force of 41 newtons along a rigid handle that makes an angle of 30º to the horizontal?
13.5 N
28.5 N
84.5 N
69.5 N
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