College Physics: Explore And Apply, Volume 2 (2nd Edition)

2nd Edition

ISBN: 9780134862910

Author: Eugenia Etkina, Gorazd Planinsic, Alan Van Heuvelen, Gorzad Planinsic

Publisher: PEARSON

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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?”

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Chapter 3, Problem 12P

* A student holds a thin aluminum pie pan horizontally 2 m above the ground and releases it Using a motion detector, she obtains the graph shown in Figure P3.12. Based on her measurements, (a) draw force diagrams for the pie pan at times 0.05 s, 0.3 s, and 0.7 s, and (b) estimate the distance that the pan travels once it reaches constant speed.

Chapter 3, Problem 12P, 12. * A student holds a thin aluminum pie pan horizontally 2 m above the ground and releases it

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Chapter 3, Problem 11P

Chapter 3, Problem 13P

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A planar double pendulum consists of two point masses \[m_1 = 1.00~\mathrm{kg}, \qquad m_2 = 1.00~\mathrm{kg}\]connected by massless, rigid rods of lengths \[L_1 = 1.00~\mathrm{m}, \qquad L_2 = 1.20~\mathrm{m}.\]The upper rod is hinged to a fixed pivot; gravity acts vertically downward with\[g = 9.81~\mathrm{m\,s^{-2}}.\]Define the generalized coordinates \(\theta_1,\theta_2\) as the angles each rod makes with thedownward vertical (positive anticlockwise, measured in radians unless stated otherwise).At \(t=0\) the system is released from rest with \[\theta_1(0)=120^{\circ}, \qquad\theta_2(0)=-10^{\circ}, \qquad\dot{\theta}_1(0)=\dot{\theta}_2(0)=0 .\]Using the exact nonlinear equations of motion (no small-angle or planar-pendulumapproximations) and assuming the rods never stretch or slip, determine the angle\(\theta_2\) at the instant\[t = 10.0~\mathrm{s}.\]Give the result in degrees, in the interval \((-180^{\circ},180^{\circ}]\).

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Chapter 3 Solutions

College Physics: Explore And Apply, Volume 2 (2nd Edition)

Ch. 3 - You apply the brakes of your car abruptly and your...Ch. 3 - Which of the statements below explains why a child...Ch. 3 - Which observers can explain the phenomenon of...Ch. 3 - 5. Which vector quantities describing a moving...Ch. 3 - You have probably observed that magnets attract...Ch. 3 - Which of the following velocity-versus-time graphs...Ch. 3 - A book sits on a tabletop. What force is the...Ch. 3 - 9. A spaceship moves in outer space. What happens...Ch. 3 - 10. A 0.10-kg apple falls on Earth, whose mass is...Ch. 3 - 11. A man stands on a scale and holds a heavy...Ch. 3 - You stand on a bathroom scale in a moving...Ch. 3 - A person pushes a 10-kg crate, exerting a 200-N...Ch. 3 - Two small balls of the same material, one of mass...Ch. 3 - 15. A box full of lead and a box of the same size...Ch. 3 - 16. Figure Q3.16 shows an unlabeled force...Ch. 3 - A person jumps from a wall and lands stiff-legged....Ch. 3 - A 3000-kg spaceship is moving away from a space...Ch. 3 - Figure Q3.19 is a velocity-versus-time graph for...Ch. 3 - 20. Explain the purpose of crumple zones, that is,...Ch. 3 - 21. Explain why when landing on a firm surface...Ch. 3 - A small car bumps into a large truck. Compare the...Ch. 3 - 23. You are pulling a sled. Compare the forces...Ch. 3 - 25. You are holding a 100-g apple. (a) What is the...Ch. 3 - 26. You throw a 100-g apple upward. (a) While the...Ch. 3 - After having been thrown upward, a 100-g apple...Ch. 3 - * In Figure P3.1 you see unlabeled force diagrams...Ch. 3 - 2. Draw a force diagram (a) for a bag hanging at...Ch. 3 - 3. For each of the following situations, draw the...Ch. 3 - 4. You hang a book bag on a spring scale and place...Ch. 3 - 5. A block of dry ice slides at constant velocity...Ch. 3 - 6. * You throw a ball upward. (a) Draw a motion...Ch. 3 - 7. A string pulls horizontally on a cart so that...Ch. 3 - 8. * Solving the previous problem, your friend...Ch. 3 - 9. * A string pulls horizontally on a cart so that...Ch. 3 - A block of dry ice slides at a constant velocity...Ch. 3 - 11 .Three motion diagrams for a moving elevator...Ch. 3 - 12. * A student holds a thin aluminum pie pan...Ch. 3 - * Figures P3.11a b, and c show three motion...Ch. 3 - 14. * A train traveling from New York to...Ch. 3 - *Explain the phenomenon of whiplash from two...Ch. 3 - An astronaut exerts a 100-N force pushing a beam...Ch. 3 - 17. Four people participate in a rope competition....Ch. 3 - 18. * Shot put throw During a practice shot put...Ch. 3 - * You know the sum of the forces F exerted on an...Ch. 3 - * You record the displacement of an object as a...Ch. 3 - 25. * Spider-Man Spider-Man holds the bottom of an...Ch. 3 - ** Matt is wearing Rollerblades. Beth pushes him...Ch. 3 - 27. * Stuntwoman The downward acceleration of a...Ch. 3 - EST Estimate the average force that a baseball...Ch. 3 - * Super Hornet jet takeoff A2.1104-kgF-18 Super...Ch. 3 - Lunar Lander The Lunar Lander of mass 2.01024 kg...Ch. 3 - 31. Aisha throws a ball upward Frances, standing...Ch. 3 - Students Lucia. Isabel, and Austin are...Ch. 3 - 33. * Astronaut Karen Nyberg, a 60-kg astronaut,...Ch. 3 - * A 0.10-kg apple falls off a tree branch that is...Ch. 3 - 35. ** An 80-kg fireman slides 5.0 m down a fire...Ch. 3 - * Earth exerts a 1.0-N gravitational force on an...Ch. 3 - * You push a bowling ball down the lane toward the...Ch. 3 - 38. * EST (a) A 50-kg skater initially at rest...Ch. 3 - 39. ** EST Basketball player LeBron James can jump...Ch. 3 - * EST The Scottish Tug of War Association contests...Ch. 3 - Consider the experiment described in Question 3.6...Ch. 3 - 42. * EST A friend drops a 0.625-kg basketball...Ch. 3 - 43 Car safety The National Transportation Safety...Ch. 3 - 44. * A 70-kg person in a moving car stops during...Ch. 3 - BIOESTLeft ventricle pumpingThe lower left chamber...Ch. 3 - Prob. 46GP Ch. 3 - 47. ** EST Olympic dive During a practice dive,...Ch. 3 - 49. ** EST You are doing squats on a bathroom...Ch. 3 - ** EST Estimate the horizontal speed of the runner...Ch. 3 - 51. ** EST Estimate the maximum acceleration of...Ch. 3 - ** EST Estimate how much Earth would move during...Ch. 3 - In an early practice run while the rocket sled was...Ch. 3 - What is Stapps67m/sspeed in miles per hour? 30mi/h...Ch. 3 - 55. What is the magnitude of the acceleration of...Ch. 3 - 56. What is the magnitude of the acceleration of...Ch. 3 - What is the average force exerted by the...Ch. 3 - 58. What is the time interval for Stapp and his...Ch. 3 - Using proportions A proportion is defined as an...Ch. 3 - Using proportions A proportion is defined as an...Ch. 3 - Using proportions A proportion is defined as an...Ch. 3 - Using proportions A proportion is defined as an...Ch. 3 - Using proportions A proportion is defined as an...

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