Two blocks of mass ma and mB, resting on a frictionless table, are connected by a stretched spring and then released (Fig. 7-48). (a) Is there a net external force on the system before release? (b) Determine the ratio of their speeds, vA/VB . (c) What is the ratio of their kinetic energies? (d) Describe the motion of the CM of this system. Ignore mass of spring. VB mB FIGURE 7-48 Problem 83.

Two blocks of mass ma and mB, resting on a frictionless table, are connected by a stretched spring and then released (Fig. 7-48). (a) Is there a net external force on the system before release? (b) Determine the ratio of their speeds, vA/VB . (c) What is the ratio of their kinetic energies? (d) Describe the motion of the CM of this system. Ignore mass of spring. VB mB FIGURE 7-48 Problem 83.

University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter9: Linear Momentum And Collisions

Section: Chapter Questions

Problem 99AP: Repeat the preceding problem for the case when the initial speed of the second object is nonzero.

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