Two blocks of masses m and 3m are placed on a frictionless, horizontal surface. A light spring is attached to the more massive block, and the blocks are pushed together with the spring between them as shown in the figure below. A cord initially holding the blocks together is burned; after that happens, the block of mass 3m moves to the right with a speed of V 2.65 m/s 3m 3m m Before V3N V Зт т After (a) What is the velocity of the block of mass m? (Assume right is positive and left is negative.) m/s 0.480 kg (b) Find the system's original elastic potential energy, taking m = J (c) Is the original energy in the spring or in the cord? in the spring in the cord (d) Is the momentum of the system conserved in the bursting-apart process? Yes No (e) If the spring was compressed by 2.10 cm, what is the spring constant of the spring? N/m

Two blocks of masses m and 3m are placed on a frictionless, horizontal surface. A light spring is attached to the more massive block, and the blocks are pushed together with the spring between them as shown in the figure below. A cord initially holding the blocks together is burned; after that happens, the block of mass 3m moves to the right with a speed of V 2.65 m/s 3m 3m m Before V3N V Зт т After (a) What is the velocity of the block of mass m? (Assume right is positive and left is negative.) m/s 0.480 kg (b) Find the system's original elastic potential energy, taking m = J (c) Is the original energy in the spring or in the cord? in the spring in the cord (d) Is the momentum of the system conserved in the bursting-apart process? Yes No (e) If the spring was compressed by 2.10 cm, what is the spring constant of the spring? N/m

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

Two blocks of masses m and 3m are placed on a frictionless, horizontal surface. A light spring is attached to the more
massive block, and the blocks are pushed together with the spring between them as shown in the figure below. A cord
initially holding the blocks together is burned; after that happens, the block of mass 3m moves to the right with a speed of
V 2.65 m/s
3m
3m
m
Before
V3N
V
Зт
т
After
(a) What is the velocity of the block of mass m? (Assume right is positive and left is negative.)
m/s
0.480 kg
(b) Find the system's original elastic potential energy, taking m =
J
(c) Is the original energy in the spring or in the cord?
in the spring
in the cord
(d) Is the momentum of the system conserved in the bursting-apart process?
Yes
No
(e) If the spring was compressed by 2.10 cm, what is the spring constant of the spring?
N/m

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