Principles of Physics: A Calculus-Based Text
5th Edition
ISBN: 9781133104261
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 5.3, Problem 5.6QQ
A bead slides freely along a curved wire lying on a horizontal surface at constant speed as shown by Figure 5.14. (a) Draw the vectors representing the force exerted by the wire on the bead at points Ⓐ, Ⓑ, and Ⓒ. (b) Suppose the bead in Figure 5.14 speeds up with constant tangential acceleration as it moves toward the right. Draw the vectors representing the force on the bead at points Ⓐ, Ⓑ, and Ⓒ.
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A spool rests on a horizontal, frictionless surface and you are looking at it from the top view (appears as a circle).In the following questions, the spool is pulled by tension forces that are applied at various locations, directions, and radii.To solve each problem, draw the spool as a circle on a piece of paper and then draw the given tension vectors.
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Rope #1 of tension 3T applies a force at radius 1R on the spool. It is located at 6 o'clock…
A spool rests on a horizontal, frictionless surface and you are looking at it from the top view (appears
as a circle).
In the following questions, the spool is pulled by tension forces that are applied at various locations,
directions, and radii.
To solve each problem, draw the spool as a circle on a piece of paper and then draw the given tension
vectors.
REMEMBER that the direction UPWARD points to the TOP of the page and DOWNWARD points to the
BOTTOM of the page.
re 1 The resulting TORQUE will be either OUT OF the page (CCW motion, POSITIVE torque) or INTO the
page (CW motion, NEGATIVE torque).
nen
A rope of tension 1T applies a force at radius 2R on the spool. It is located at 6 o'clock and pulls to
ence the right.
What is the resulting torque in terms of RT?
Remember to check whether the torque is positive (results in CCW motion) or negative (results in CW
motion).
RT
Submit Answer
Tries 0/3
A rope of tension 4T applies a force at radius 4R on the spool. It is located at 9 o'clock…
A dancer is standing on one leg on a drawbridge that is about to open. The coefficients of static and kinetic friction between the drawbridge and the dancer's foot are μs and μk, respectively. n⃗ represents the normal force exerted on the dancer by the bridge, and F⃗g represents the gravitational force exerted on the dancer, as shown in the drawing.(Figure 1). For all the questions, we can assume that the bridge is a perfectly flat surface and lacks the curvature characteristic of most bridges.
Before the drawbridge starts to open, it is perfectly level with the ground. The dancer is standing still on one leg. What is the horizontal component of the friction force f⃗? (Express your answer in terms of some or all of the variables n, μs, and/or μk.)
(Figure 2). The drawbridge then starts to rise. The dancer continues to stand on one leg. The drawbridge stops just at the point where the dancer is on the verge of slipping. What is the magnitude f of the frictional force now? (Express…
Chapter 5 Solutions
Principles of Physics: A Calculus-Based Text
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