m = 0.350 kg. (c) Is the original energy in the spring or in the cord? (d) Explain your answer to part (c). (e) Is the momentum of the system conserved in the bursting-apart process? Explain how that is possible considering (f) there are large forces acting and (g) there is no motion before- hand and plenty of motion afterward? 5. Two blocks of masses m alu QIC are placed on a frictionless, hor- V izontal surface. A light spring is attached to the more mas- sive block, and the blocks are pushed together with the spring between them (Fig. P9.5). 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 2.00 m/s. (a) What is the velocity of the block of mass m? (b) Find the system's original elastic potential energy, taking 3m m Before 2.00 m/s 3m After Figure P9.5

m = 0.350 kg. (c) Is the original energy in the spring or in the cord? (d) Explain your answer to part (c). (e) Is the momentum of the system conserved in the bursting-apart process? Explain how that is possible considering (f) there are large forces acting and (g) there is no motion before- hand and plenty of motion afterward? 5. Two blocks of masses m alu QIC are placed on a frictionless, hor- V izontal surface. A light spring is attached to the more mas- sive block, and the blocks are pushed together with the spring between them (Fig. P9.5). 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 2.00 m/s. (a) What is the velocity of the block of mass m? (b) Find the system's original elastic potential energy, taking 3m m Before 2.00 m/s 3m After Figure P9.5

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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Concept explainers

Spring Potential Energy

The potential energy is the energy possessed by a body by virtue of its position or the energy held by the object due to its position relative to other objects, its force like stresses, charge, and other factors affecting the particles of the body. The potential energy is the measure of the net work done by or on the body. The spring potential energy is the potential energy stored due to the deformation of an elastic spring and this elasticity is due to the stretched spring. The elasticity is the ability of a solid-state matter to come back to its equilibrium position or original position after any kind of external force is acted on it. It is also known as Elastic potential energy. The potential energy here is caused due to the displacement of the spring from its equilibrium position to another position and this potential energy is equal to the net work done due to the stretching of the spring. It also resembles the same mechanics of the oscillation of a simple pendulum, where due to the external force, the object moves from its equilibrium position to its maximum ends and the periodic motion continues till it comes back to the equilibrium position to rest. 

Question

100%

5. (a) –6.00î m/s (b) 8.40 J
in the spring. (d) A force had to be exerted over a dis-
placement to compress the spring, transferring energy
into it by work. The cord exerts force, but over no dis-
placement.
the value zero.
(c) The original energy is
(e) System momentum is conserved with
(f) The forces on the two blocks are
internal forces, which cannot change the momentum
of the system; the system is isolated. (g) Even though
there is motion afterward, the final momenta are of
equal magnitude in opposite directions, so the final
momentum of the system is still zero.

m = 0.350 kg. (c) Is the original energy in the spring or
in the cord? (d) Explain your answer to part (c). (e) Is the
momentum of the system conserved in the bursting-apart
process? Explain how that is possible considering (f) there
are large forces acting and (g) there is no motion before-
hand and plenty of motion afterward?
5. Two blocks of masses m ailu ne
QIC are placed on a frictionless, hor-
V izontal surface. A light spring
is attached to the more mas-
3m
m
Before
sive block, and the blocks are
pushed together with the spring
between them (Fig. P9.5).
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 2.00 m/s. (a) What is
the velocity of the block of mass
m? (b) Find the system's original
elastic potential energy, taking
2.00 m/s
3m
m
After
b
Figure P9.5

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