Question

Two blocks with masses 3.0 kg and 5.0 kg are placed on a horizontal frictionless surface. A light spring is placed in a horizontal position between the blocks. The blocks are pushed together, compressing the spring, and then released from rest. After contact with the spring ends, the 5.0-kg mass has a speed of 2.0 m/s. How much potential energy was stored in the spring when the blocks were released?

Answer #1

Two blocks of masses m1 = 4.64 kg and m2 = 7.01 kg are placed on
a frictionless horizontal surface. A light spring is placed between
the blocks and the blocks are pushed together with the spring
between them and released. m1 kg moves to the right with a speed of
7.4 m/s. Determine the speed of the other mass. (Hint: Momentum is
conserved!)

A 2.00 kg block slides on a frictionless, horizontal surface
with a speed of 5.10 m/s, until colliding head-on with, and
sticking to, a 1.00 kg block at rest. A) Find the speed of the
combination after the collision. B) The two blocks continue to
slide together until coming in contact with a horizontal spring and
eventually brought to rest. If the blocks compress the spring 10.0
cm, find the spring constant of the spring. C) How much work did...

Two blocks are held together, with a compressed spring between
them, on a horizontal frictionless surface. When the system is
released, the spring pushes the blocks apart and they then move off
in opposite directions. The spring remains behind, and you can
assume that all of its energy is transformed to the kinetic energy
of the blocks. Find the kinetic energy of block A
HomeworkUnanswered The mass of block A is 3.00 times the mass of
block B, and the...

A 3.0-kg block sliding on a frictionless horizontal surface is
accelerated by a compressed spring. If the 200 N/m spring is
initially compressed 10 cm, determine (a) the potential energy
stored in the spring. As the block leaves the spring, find (b) the
kinetic energy of the block, and (c) the velocity of the block.

Block 2 with mass m2=5.0 kg is at rest on a
frictionless surface and connected to a spring constant k=64.0 N/m.
The other end of the spring is connected to a wall, and the spring
is initially at its equilibrium (unstretched) position. Block 1
with mass m1=10.0 is initially traveling with speed
v1=4.0 m/s and collides with block 2. The collision is
instantaneous, and the blocks stick together after the collision.
Find the speed of the blocks immediately after the...

Blocks A (mass 3.5 kg) and B (mass 5.5 kg) move on a
frictionless, horizontal surface. Initially, block B is at rest and
block A is moving toward it at 2.0 m/s. The blocks are equipped
with ideal spring bumpers (as in Example 8.10, Section 8.4). The
collision is head-on, so all motion before and after the collision
is along a straight line.
(a) Find the maximum energy stored in the spring bumpers, in
Joules.
(b) Find the velocity of...

A block of mass 3.40 kg is placed against a horizontal spring of
constant k = 725 N/m and pushed so the spring compresses
by 0.0400 m.
HINT
(a)
What is the elastic potential energy of the block-spring system
(in J)?
J
(b)
If the block is now released and the surface is frictionless,
calculate the block's speed (in m/s) after leaving the spring.
m/s

A 4.37 kg block free to move on a horizontal, frictionless
surface is attached to one end of a light horizontal spring. The
other end of the spring is fixed. The spring is compressed 0.117 m
from equilibrium and is then released. The speed of the block is
1.01 m/s when it passes the equilibrium position of the spring. The
same experiment is now repeated with the frictionless surface
replaced by a surface for which uk = 0.345. Determine the...

Blocks A (mass 5.00 kg) and B (mass 7.00 kg) move on a
frictionless, horizontal surface. Initially, block B is at rest and
block A is moving toward it at 4.00 m/s. The blocks are equipped
with ideal spring bumpers. The collision is head-on, so all motion
before and after the collision is along a straight line. Let +x be
the direction of the initial motion of block A. Find the maximum
energy stored in the spring bumpers. Find the...

A 3.30-kg object is attached to a spring and placed on
frictionless, horizontal surface. A horizontal force of 21.0 N is
required to hold the object at rest when it is pulled 0.200 m from
its equilibrium position (the origin of the x axis). The
object is now released from rest from this stretched position, and
it subsequently undergoes simple harmonic oscillations.
(a) Find the force constant of the spring.
N/m
(b) Find the frequency of the oscillations.
Hz
(c)...

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