College Physics: A Strategic Approach (3rd Edition)

3rd Edition

ISBN: 9780321879721

Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field

Publisher: PEARSON

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Textbook Question

Chapter P.1, Problem 18P

Bending Beams

If you bend a rod down, it compresses the lower side of the rod and stretches the top, resulting in a restoring force. Figure I.4 shows a

FIGURE 1.4

Chapter P.1, Problem 18P, Bending Beams If you bend a rod down, it compresses the lower side of the rod and stretches the top,

beam of length L, width w, and thickness t fixed at one end and free to move at the other. Deflecting the end of the beam causes a restoring force F at the end of the beam. The magnitude of the restoring force F depends on the dimensions of the beam, the Young’s modulus Y for the material, and the deflection d. For small values of the deflection, the restoring force is

F = [ Y w t 3 4 L 3 ] d

This is similar to the formula for the restoring force of a spring, with the quantity in brackets playing the role of the spring constant k.

When a 70 kg man stands on the end of a springboard (a type of diving board), the board deflects by 4.0 cm.

A 70 kg man jumps up and lands on the end of the board, deflecting it by 12 cm. At this instant, what is the approximate magnitude of the upward force the board exerts on his feet? A. 700 A. 700 N

B. 1400 N

C. 2100N

D. 2800 N

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Chapter P.1, Problem 17P

Chapter P.1, Problem 19P

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Chapter P Solutions

College Physics: A Strategic Approach (3rd Edition)

Ch. P.1 - Prob. 1P Ch. P.1 - The following questions are related to the passage...Ch. P.1 - The following questions are related to the passage...Ch. P.1 - Prob. 4P Ch. P.1 - Animal Athletes Different animals have very...Ch. P.1 - Animal Athletes Different animals have very...Ch. P.1 - Animal Athletes Different animals have very...Ch. P.1 - Animal Athletes Different animals have very...Ch. P.1 - Animal Athletes Different animals have very...Ch. P.1 - The drag force on an object moving in a liquid is...

Ch. P.1 - The drag force on an object moving in a liquid is...Ch. P.1 - Sticky Liquids BIO The drag force on an object...Ch. P.1 - The drag force on an object moving in a liquid is...Ch. P.1 - Pulling Out of a Dive Falcons are excellent fliers...Ch. P.1 - Pulling Out of a Dive Falcons are excellent fliers...Ch. P.1 - Pulling Out of a Dive Falcons are excellent fliers...Ch. P.1 - Bending Beams If you bend a rod down, it...Ch. P.1 - Bending Beams If you bend a rod down, it...Ch. P.1 - Bending Beams If you bend a rod down, it...Ch. P.1 - Additional Integrated Problems 20. You go to the...Ch. P.1 - If you stand on a scale at the equator, the scale...Ch. P.1 - Additional Integrated Problems Dolphins and other...Ch. P.2 - Prob. 1P Ch. P.2 - Prob. 2P Ch. P.2 - Prob. 3P Ch. P.2 - Prob. 4P Ch. P.2 - The following passages and associated questions...Ch. P.2 - The following passages and associated questions...Ch. P.2 - The following passages and associated questions...Ch. P.2 - The following passages and associated questions...Ch. P.2 - The following passages and associated questions...Ch. P.2 - Testing Tennis Balls Tennis balls are tested by...Ch. P.2 - Testing Tennis Balls Tennis balls are tested by...Ch. P.2 - Testing Tennis Balls Tennis balls are tested by...Ch. P.2 - Squid Propulsion Squid usually move by using their...Ch. P.2 - Squid Propulsion Squid usually move by using their...Ch. P.2 - Squid Propulsion Squid usually move by using their...Ch. P.2 - Squid Propulsion Squid usually move by using their...Ch. P.2 - Teeing Off A golf club has a lightweight flexible...Ch. P.2 - Teeing Off A golf club has a lightweight flexible...Ch. P.2 - Teeing Off A golf club has a lightweight flexible...Ch. P.2 - Teeing Off A golf club has a lightweight flexible...Ch. P.2 - Additional Integrated Problems Football players...Ch. P.2 - Additional Integrated Problems The unit of...Ch. P.2 - Additional Integrated Problems A 100 kg football...Ch. P.2 - Additional Integrated Problems A swift blow with...Ch. P.2 - Additional Integrated Problems A childs sled has...Ch. P.3 - Size and Life Physicists look for simple models...Ch. P.3 - Size and Life Physicists look for simple models...Ch. P.3 - Size and Life Physicists look for simple models...Ch. P.3 - Size and Life Physicists look for simple models...Ch. P.3 - Prob. 6P Ch. P.3 - Prob. 7P Ch. P.3 - Prob. 8P Ch. P.3 - Prob. 9P Ch. P.3 - Prob. 10P Ch. P.3 - Prob. 11P Ch. P.3 - Prob. 12P Ch. P.3 - Prob. 13P Ch. P.3 - Prob. 14P Ch. P.3 - Passenger Balloons Long-distance balloon flights...Ch. P.3 - Passenger Balloons Long-distance balloon flights...Ch. P.3 - Passenger Balloons Long-distance balloon flights...Ch. P.3 - Prob. 18P Ch. P.3 - Prob. 19P Ch. P.3 - Prob. 20P Ch. P.3 - Prob. 21P Ch. P.4 - Waves in the Earth and the Ocean In December 2004,...Ch. P.4 - Waves in the Earth and the Ocean In December 2004,...Ch. P.4 - Waves in the Earth and the Ocean In December 2004,...Ch. P.4 - Waves in the Earth and the Ocean In December 2004,...Ch. P.4 - Waves in the Earth and the Ocean In December 2004,...Ch. P.4 - Prob. 6P Ch. P.4 - Prob. 7P Ch. P.4 - Prob. 8P Ch. P.4 - Prob. 9P Ch. P.4 - Prob. 10P Ch. P.4 - Prob. 11P Ch. P.4 - Prob. 12P Ch. P.4 - Prob. 13P Ch. P.4 - Prob. 14P Ch. P.4 - Prob. 15P Ch. P.4 - Prob. 16P Ch. P.4 - In the Swing A rope swing is hung from a tree...Ch. P.4 - In the Swing A rope swing is hung from a tree...Ch. P.4 - In the Swing A rope swing is hung from a tree...Ch. P.4 - Additional Integrated Problems The jumping gait of...Ch. P.4 - Prob. 21P Ch. P.5 - Scanning Confocal Microscopy Although modern...Ch. P.5 - If, because of a poor-quality objective, the light...Ch. P.5 - The resolution of a scanning confocal microscope...Ch. P.5 - Prob. 4P Ch. P.5 - In a horses eye, the image of a close object will...Ch. P.5 - Prob. 6P Ch. P.5 - A horse is looking straight ahead at a person who...Ch. P.5 - Prob. 8P Ch. P.5 - Light of wavelength 600 nm in air passes into the...Ch. P.5 - Prob. 10P Ch. P.5 - Prob. 11P Ch. P.5 - 12. In human vision, the curvature of the cornea...Ch. P.5 - Prob. 13P Ch. P.5 - 14. Figure V.2c shows the lens of the eye bringing...Ch. P.5 - The pupil of your eye is smaller in bright light...Ch. P.5 - People with good vision can make out an...Ch. P.5 - Prob. 17P Ch. P.5 - Prob. 18P Ch. P.6 - The Greenhouse Effect and Global Warming...Ch. P.6 - The Greenhouse Effect and Global Warming...Ch. P.6 - The Greenhouse Effect and Global Warming...Ch. P.6 - The Greenhouse Effect and Global Warming...Ch. P.6 - The Greenhouse Effect and Global Warming...Ch. P.6 - Prob. 6P Ch. P.6 - Prob. 7P Ch. P.6 - The following passages and associated questions...Ch. P.6 - Prob. 9P Ch. P.6 - Prob. 10P Ch. P.6 - Prob. 11P Ch. P.6 - Electric Cars In recent years, practical hybrid...Ch. P.6 - Electric Cars In recent years, practical hybrid...Ch. P.6 - Electric Cars In recent years, practical hybrid...Ch. P.6 - Electric Cars In recent years, practical hybrid...Ch. P.6 - Wireless Power Transmission Your laptop has...Ch. P.6 - Wireless Power Transmission Your laptop has...Ch. P.6 - Wireless Power Transmission Your laptop has...Ch. P.6 - Wireless Power Transmission Your laptop has...Ch. P.6 - Additional Integrated Problems 20. A 20 resistor...Ch. P.6 - Prob. 21P Ch. P.7 - Prob. 1P Ch. P.7 - Prob. 2P Ch. P.7 - Prob. 3P Ch. P.7 - Prob. 4P Ch. P.7 - Prob. 5P Ch. P.7 - Prob. 6P Ch. P.7 - Prob. 7P Ch. P.7 - Prob. 8P Ch. P.7 - Prob. 9P Ch. P.7 - Prob. 10P Ch. P.7 - Prob. 11P Ch. P.7 - Prob. 12P Ch. P.7 - Prob. 13P Ch. P.7 - Prob. 14P Ch. P.7 - Prob. 15P Ch. P.7 - Prob. 16P Ch. P.7 - Prob. 17P Ch. P.7 - Prob. 18P Ch. P.7 - Many speculative plans for spaceships capable of...Ch. P.7 - A muon is a lepton that is a higher-mass (rest...Ch. P.7 - A muon is a lepton that is a higher-mass (rest...

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