L k = 100 N/m ell e 1.0 kg X = -0.5 m x = 0.0 m x = 0.5 m A block of mass 1.0 kg on a horizontal surface is attached to a horizontal spring of negligible mass and spring constant 100 N/m. The other end of the spring is attached to a wall, and there is negligible friction between the block and the horizontal surface. When the spring is unstretched, the block is located at x = 0 m. The block is then pulled to x = 0.5 m and released from rest so that the block-spring system oscillates between x = -0.5 m and x = 0.5 m, as shown in the figure. Which of the following descriptions about the system are correct? Select two answers. The kinetic energy of the block and the spring potential energy of the system at A x = 0.25 m are both half of the total mechanical energy of the system. The spring potential energy of the system at x = 0.25 m is nearly 3.13 J. The kinetic energy of the system at C x = 0.3 m is nearly 4.5 J. The sum of the spring potential energy of the system and the kinetic energy of the block at x = 0.4 m is nearly D 12.5 J.

L k = 100 N/m ell e 1.0 kg X = -0.5 m x = 0.0 m x = 0.5 m A block of mass 1.0 kg on a horizontal surface is attached to a horizontal spring of negligible mass and spring constant 100 N/m. The other end of the spring is attached to a wall, and there is negligible friction between the block and the horizontal surface. When the spring is unstretched, the block is located at x = 0 m. The block is then pulled to x = 0.5 m and released from rest so that the block-spring system oscillates between x = -0.5 m and x = 0.5 m, as shown in the figure. Which of the following descriptions about the system are correct? Select two answers. The kinetic energy of the block and the spring potential energy of the system at A x = 0.25 m are both half of the total mechanical energy of the system. The spring potential energy of the system at x = 0.25 m is nearly 3.13 J. The kinetic energy of the system at C x = 0.3 m is nearly 4.5 J. The sum of the spring potential energy of the system and the kinetic energy of the block at x = 0.4 m is nearly D 12.5 J.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Conservation Of Energy

Section: Chapter Questions

Problem 55P: A horizontal spring attached to a wall has a force constant of k = 850 N/m. A block of mass m = 1.00...

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