Physics for Scientists and Engineers
10th Edition
ISBN: 9781337553278
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 6.2, Problem 6.2QQ
A bead slides at constant speed along a curved wire lying on a horizontal surface as shown in Figure 6.8. (a) Draw the vectors representing the force exerted by the wire on the bead at points Ⓐ, Ⓑ,and Ⓒ. (b) Suppose the bead in Figure 6.8 speeds up with constant tangential acceleration as it moves toward the right. Draw the vectors representing the forces 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
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To solve each problem, draw the spool as a circle on a piece of paper and then draw the given tension
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REMEMBER that the direction UPWARD points to the TOP of the page and DOWNWARD points to the
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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
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A rope of tension 4T applies a force at radius 4R on the spool. It is located at 9 o'clock…
A bead slides at constant speed along a curved wire lying on a horizontal surface as shown. (a) Draw the vectors representing the force exerted by the wire on the bead at points Ⓐ, Ⓑ, and Ⓒ. (b) Suppose the bead as shown speeds up with constant tangential acceleration as it moves toward the right. Draw the vectors representing the forces on the bead at points Ⓐ, Ⓑ, and Ⓒ.
A 1,040-N crate is being pushed across a level floor at a constant speed by a force
F
of 390 N at an angle of 20.0° below the horizontal, as shown in the figure a below.
Two figures show a side view of a crate positioned upon a horizontal surface.
Figure (a): An arrow pointing downward and to the right is labeled vector F and forms an angle of 20° below the horizontal as it approaches the upper left edge of the crate.
Figure (b): An arrow pointing upward and to the right is labeled vector F and forms an angle of 20° above the horizontal as it extends from the upper right edge of the crate.
(a) What is the coefficient of kinetic friction between the crate and the floor? (Enter your answer to at least three decimal places.)(b) If the 390-N force is instead pulling the block at an angle of 20.0° above the horizontal, as shown in the figure b, what will be the acceleration of the crate? Assume that the coefficient of friction is the same as that found in part (a).
Chapter 6 Solutions
Physics for Scientists and Engineers
Ch. 6.1 - You are riding on a Ferris wheel that is rotating...Ch. 6.2 - A bead slides at constant speed along a curved...Ch. 6.3 - Consider the passenger in the car making a left...Ch. 6.4 - A basketball and a 2-inch-diameter steel ball,...Ch. 6 - In the Bohr model of the hydrogen atom, an...Ch. 6 - Whenever two Apollo astronauts were on the surface...Ch. 6 - A car initially traveling eastward turns north by...Ch. 6 - A curve in a road forms part of a horizontal...Ch. 6 - In a cyclotron (one type of particle accelerator),...Ch. 6 - Why is the following situation impossible? The...
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