Each hand pusheswith a constant force4. Two identical blocks are connected by an ideal spring.The blocks are pushed towards each other across a levelfrictionless surface by hands that each exert a constanthorizontal force of magnitude F,. At time t, the blockshave speed v, and the spring is at its equilibrium length.At time t2, when the experiment ends, the blocks haveeach moved a distance d,. The speed of each block attime t2, V2, is less than v,.of magnitude F,v,v,Bdietata. State whether each of the following quantities ispositive, negative, or zero during the interval from tto t. Explain.t= 1,Ai. The work done on block A by the handii. The work done on block B by the hando mniii. The net work done by external forces on system S (consisting of block A, block B, andthe spring.)b. During the interval from t to t,, does the total energy of system S increase, decrease, or stathe same? Explain.c. Consider the following statement:"The kinetic energy of the system decreases, since the final speed of the blocks is less thanthe initial speed of the blocks. At the same time, the potential energy of the systemincreases because the spring is being compressed. Since the total energy of the system isequal to the kinetic energy plus the potential energy, these two changes cancel each other outand the total energy of the system stays the same."Do you agree or disagree with this statement? Explain.

Answered: Image /qna-images/answer/c7ce7091-43fb-4286-89dc-94431e94b677.jpg

Each hand pushes with a constant force 4. Two identical blocks are connected by an ideal spring. The blocks are pushed towards each other across a level frictionless surface by hands that each exert a constant horizontal force of magnitude F. At time t, the blocks have speed v, and the spring is at its equilibrium length. At time t2, when the experiment ends, the blocks have each moved a distance d,. The speed of each block at time t2, V2, is less than v,. of magnitude F, v, v, k A d State whether each of the following quantities is positive, negative, or zero during the interval from t to t2. Explain. a. t= 1, A P B i. The work done on block A by the hand Kd, ii. The work done on block B by the hand sidizn o-sdi taili oz ms aoor a doii l ap nielyx layisnt eid iii. The net work done by external forces the spring.) system S (consisting of block A, block B, and b. During the interval from t to t2, does the total energy of system S increase, decrease, or sta the same? Explain. с. Consider the following statement: "The kinetic energy of the system decreases, since the final speed of the blocks is less than the initial speed of the blocks. At the same time, the potential energy of the system increases because the spring is being compressed. Since the total energy of the system is equal to the kinetic energy plus the potential energy, these two changes cancel each other out and the total energy of the system stays the same." Do you agree or disagree with this statement? Explain.

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 63P: A small object is placed at the top of an incline that is essentially frictionless. The object...