What force is exerted on the tooth in Figure 4.38 if the tension in the wire is 25.0 N? Note that the force applied to the tooth is smaller than the tension in the wire, but this is necessitated by practical considerations of how force can be applied in the mouth. Explicitly show how you follow steps in the Problem-Solving Strategy for Newton's laws of motion. Figure 4.38 Braces are used to apply forces to teeth to realign them. Shown in this figure are the tensions applied by the wire to the protruding tooth. The total force applied to the tooth by the wire, F a p p , points straight toward the back of the mouth.
What force is exerted on the tooth in Figure 4.38 if the tension in the wire is 25.0 N? Note that the force applied to the tooth is smaller than the tension in the wire, but this is necessitated by practical considerations of how force can be applied in the mouth. Explicitly show how you follow steps in the Problem-Solving Strategy for Newton's laws of motion. Figure 4.38 Braces are used to apply forces to teeth to realign them. Shown in this figure are the tensions applied by the wire to the protruding tooth. The total force applied to the tooth by the wire, F a p p , points straight toward the back of the mouth.
What force is exerted on the tooth in Figure 4.38 if the tension in the wire is 25.0 N? Note that the force applied to the tooth is smaller than the tension in the wire, but this is necessitated by practical considerations of how force can be applied in the mouth. Explicitly show how you follow steps in the Problem-Solving Strategy for Newton's laws of motion.
Figure 4.38 Braces are used to apply forces to teeth to realign them. Shown in this figure are the tensions applied by the wire to the protruding tooth. The total force applied to the tooth by the wire, Fapp, points straight toward the back of the mouth.
In the figure below, the mass the body is 10.0 kg, and F1=30.0 N, F2 = 20.0 N and F3 = 50.0 N. The angles θ1 = 32o and θ2 = 41o.
Write Newton’s Laws in terms of F1, F2, F3, and along the x and y axes by first calculating the components of each force along the x and y axes.
Calculate the accelerations in the x and y directions.
Calculate the magnitude and direction of the net acceleration of mass m.
If the mass was initially at rest, which direction will it start moving? What is the direction of the net force?
If the mass is initially moving along the positive y-axis, what is the effect of the acceleration on its speed and direction?
A loaded elevator with very worn cables has a total mass of 2200 [kg], and the cables can withstand a maximum tension of 28,000 [N].
Draw the free-body force diagram for the elevator. In terms of the forces on your diagram, what is the net force on the elevator? Apply Newton’s second law to the elevator and find the maximum upward acceleration for the elevator if the cables are not to break.
What would be the answer to part (a) if the elevator were on the moon, where g = 1.62 [m/s2]?
1.
2.
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4.
The wheels on your suitcase are not working so in an attempt to budge it from rest, you attached a
strap and drag it along the floor. The tension force you applied to your suitcase is 148 N and the frictional force
that the floor exerts on your suitcase is 98 N. The weight of your suitcase 204 N. Find the acceleration and the
mass of your suitcase. Sketch a free-body diagram of your system.
Possible answers for mass:
(a) 15.71 kg
(b) 20.82 kg
Possible answers for acceleration:
(a) 2.40 m/s²
(b) 5.10 m/s²
Possible answers for maximum tension:
(a) 210.70 N
(b) 793.80 N
A wrecking ball with a mass of 81.0 kg hangs from a uniform, heavy-duty chain of mass 21.50 kg. (a)
Find the maximum magnitude of the tension in the chain. (b) What is the tension at a point one-fourth of the
way up from the bottom of the chain? Sketch a free-body diagram of your system.
(c) 50.00 kg
(d) 1999.20 kg
Possible answers for the magnitude of the acceleration:
(a) - 0.21 m/s²
(b) - 2.05 m/s²
(c) 9.42…
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