CHAPTER 9 9-7Work and Kinetic Energy9.4 Restoring Forces and the Work Done by a Spring19. A spring is attached to the floor and pulled straight up by a string. The string's tension is measured.The graph shows the tension in the string as a function of the spring's length L.T(N)Tension T105LL (cm)10a. Does this spring obey Hooke's Law? Explain why or why not.58w.Huc dot112RKb. If it does, what is the spring constant?20. Draw a figure analogous to Figure 9.17 in the textbook for a spring that is attached to a wall on theright end. Use the figure to show that F and As always have opposite signs.20

Part A:Yes,The given spring obeys Hook’s law because the tension induced in the spring is linearly…

Answered: CHAPTER 9 9-7 Work and Kinetic Energy…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question 1 Not yet answered Marked out of 1.00 P Flag question A spring (k = 800 N/m) is placed in a %3D vertical position with its lower end supported by a horizontal surface (see Figure). The upper end is depressed 20 cm, and a 0.5-kg block is placed on the depressed spring. The system is then released from rest. How far above the point of release will the block rise? m K Select one: a. 2.8 m
Question 6 When a student stretches a spring, what is the flow of energy? a. Energy goes into the spring and into the student. X b. There is no change in the energy of the spring, only for the student. c. There is no change in the energy of the student, but there is a change for the spring. d. Envery leaves the spring and goes to the student. e. Energy goes into the spring from the student.
10 cm long spring, with a spring constant of 27 N/m, is used to reload the ball in a pinball machine. The spring is compressed by 4.0 cm by a mechanism in the machine and then let go. a. Calculate the elastic potential energy stored in the spring A new spring is fitted into the machine. It only needs to be compressed by 3.0 cm to store the same amount of elastic potential energy as the previus spring. b. Calculate the spring constant of this new spring The owner of the game wants to double the potential energy stored in this new spring. c. Calculate the compression of the spring needed in order to achieve this
TNT AR @N 19111:10 greater the gravitational potential energy. 12. A 50kg and 40kg man climbed a coconut tree with a height of 15m. Compare the potential energy of each man. A. The potential energy of each man is 7,350J and 5,880J. B. The potential energy of a 50kg man is 7,350J that is greater compared to a 5,880J potential energy of a 40kg man. C. The potential energy of 50kg and 40kg man who climbed a height of 15m are 7,350J and 5,880J respectively. D. The potential energy of a 50kg man is 7,350J that is greater compared to a 5,880J potential energy of a 40kg man thus the greater the mass of a body the greater the potential energy. 13. What is kinetic energy? A. Kinetic energy is the energy in motion. B. Kinetic Energy is the energy possessed by a moving object. C. Kinetic energy is the energy in motion, and it is expressed in Joule. D. Kinetic energy is the energy in motion, and it depends on the mass and velocity of the object. 14. Two cars A and B are travelling at a velocity of…
3. Given the force, F(x)=1-4x + 4x³ a. Find an expression for the potential energy. b. Plot F(x) between x = -2 to x = +2 c. Plot U(x) between x = -2 to x = +2 d. Identify the equilibrium points and comment on the stability at those points.
B10
A block attached to a 15 N/m-spring constant spring moves on a frictionless horizontal surface, its position-vs-time graph is shown below. What is the total mechanical energy of the block-spring system, in Joules? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit x (cm) 20 is needed in your answer, it is already given in the question statement. 0 -20- ਲਈ 4 6 8 –t (s)
Work and energy
3. A box of books (mass of 7.0 kg) sits stationary on a smooth ramp that is at 45° to the horizontal as shown below. Determine the unstretched length of the spring used to hold this box in place if the spring has a constant of 180 N/m. Question #3 0.40 m 7.0 kg 45° 4. In the diagram below, the two springs have the same spring constant of 250 N/m and an unstretched length of 2.5 m each. What force is applied horizontally (to the left) in order for the ring to be displaced a distance of 1.2 m from the wall as indicated?. 0.30 m...--- --------
A spring with a spring constant of 366 N/m is compressed so it contains 18.7392 joules of elastic potential energy. A. How much is the spring compressed by? __________meters
I. General setup - 0.5 m Object of known size (e.g., piece of paper) String Nut / Object II. Prediction questions and background physics For this experiment, you will release the object from rest and observe its subsequent motion. Before conducting the experiment or doing your analysis, answer the following questions based on your understanding of the physics of motion and conservation of energy:
Marked out of 200 P flag question A spring of spring constant k = 625 N/m rests on a horizontal frictionless surface. A 0.25 kg object compressed the spring by 0.5 m. If the mass is released from rest, what is the speed of the mass as it passes through the Fini equilibrium point (in m/s)? wwwM.m a. 10 b. 15 C. 20 d. 25 O 2.b O 3. d

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