Consult Multiple-Concept Example 9 to explore a model for solving this problem. A person pushes on a 58-kg refrigerator with a horizontal force of -280 N; the minus sign indicates that the force points in the -x direction. The coefficient of static friction is 0.62. (a) If the refrigerator does not move, what are the magnitude and direction of the static frictional force that the floor exerts on the refrigerator? (b) What is the magnitude of the largest pushing force that can be applied to the refrigerator before it just begins to move? Assume g = 9.8 m/s². (a) Static frictional force (b) Magnitude of largest force = = i i

Consult Multiple-Concept Example 9 to explore a model for solving this problem. A person pushes on a 58-kg refrigerator with a horizontal force of -280 N; the minus sign indicates that the force points in the -x direction. The coefficient of static friction is 0.62. (a) If the refrigerator does not move, what are the magnitude and direction of the static frictional force that the floor exerts on the refrigerator? (b) What is the magnitude of the largest pushing force that can be applied to the refrigerator before it just begins to move? Assume g = 9.8 m/s². (a) Static frictional force (b) Magnitude of largest force = = i i

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter5: Further Applications Of Newton's Laws: Friction, Drag, And Elasticity

Section: Chapter Questions

Problem 1PE: A physics major is cooking breakfast when he notices that the frictional force between his steel...

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Concept explainers

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”

Question

Consult Multiple-Concept Example 9 to explore a model for solving this problem. A person pushes on a 58-kg refrigerator with a
horizontal force of -280 N; the minus sign indicates that the force points in the -x direction. The coefficient of static friction is 0.62. (a)
If the refrigerator does not move, what are the magnitude and direction of the static frictional force that the floor exerts on the
refrigerator? (b) What is the magnitude of the largest pushing force that can be applied to the refrigerator before it just begins to
move? Assume g = 9.8 m/s².
(a) Static frictional force
(b) Magnitude of largest force
=
i
i

EXAMPLE 9 | The Force Needed to Start a Skier Moving
A skier is standing motionless on a horizontal patch of snow. She is holding onto a horizontal tow rope, which is about to pull her forward (see Figure 4.22a). The skier's mass is 59 kg, and the coefficient of
static friction between the skis and snow is 0.14. What is the magnitude of the maximum force that the tow rope can apply to the skier without causing her to move?
cation wilow.com
MAX
(a)
FN
+V
1
1
mg
F
+x

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