Question

A block of mass 0.630 kg is pushed against a horizontal spring of negligible mass until the spring is compressed a distance x. The force constant of the spring is 450 N/m. When it is released, the block travels along a frictionless, horizontal surface to point circled A, the bottom of a vertical circular track of radius R = 1.00 m, and continues to move up the track. The speed of the block at the bottom of the track is vA = 13.6 m/s, and the block experiences an average frictional force of 7.00 N while sliding up the track. (a) What is x? m (b) If the block were to reach the top of the track, what would be its speed at that point?? m/s (c) Does the block actually reach the top of the track, or does it fall off before reaching the top? block reaches top of the track block falls off before reaching the top

Answer #1

A 3.00 kg mass is pushed against a spring and released. If the
spring constant of the spring is 7500 N/m and the spring is
compressed 10.0 cm. (a) What is the energy stored in the compressed
spring? (b) What is the maximum speed ?0 of the mass? (c) The mass
then travels across a rough surface and then up a smooth ramp. The
speed at the beginning of the ramp is ?1 = 4.00 m/s. What is the
work...

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 2.90 kg block on a horizontal floor is attached to a
horizontal spring that is initially compressed 0.0340 m . The
spring has force constant 850 N/m . The coefficient of kinetic
friction between the floor and the block is 0.42 . The block and
spring are released from rest and the block slides along the
floor.
Part A
What is the speed of the block when it has moved a distance of
0.0190 m from its initial position?...

A wooden block with mass 1.80 kg is placed against a compressed
spring at the bottom of a slope inclined at an angle of 34.0 ?
(point A). When the spring is released, it projects the block up
the incline. At point B, a distance of 6.00 m up the incline from
A, the block is moving up the incline at a speed of 6.45 m/s and is
no longer in contact with the spring. The coefficient of kinetic
friction...

A 28 kg block on a horizontal surface is attached to a
horizontal spring of spring constant k = 4.8 kN/m. The block is
pulled to the right so that the spring is stretched 7.2 cm beyond
its relaxed length, and the block is then released from rest. The
frictional force between the sliding block and the surface has a
magnitude of 37 N. (a) What is the kinetic energy of the block when
it has moved 1.6 cm from...

A wooden block with mass 1.30 kg is placed against a compressed
spring at the bottom of a slope inclined at an angle of 35.0 ∘
(point A). When the spring is released, it projects the block up
the incline. At point B, a distance of 7.95 m up the incline from
A, the block is moving up the incline at a speed of 5.75 m/s and is
no longer in contact with the spring. The coefficient of kinetic
friction...

a
0.2 kg mass is pushed down against a vertical spring with a spring
constant k = 1000 N/m. when the spring is compressed by 10 cm, the
object is let go. what vertical height above the release point will
the obhect reach? give answer in meters

A block with a mass m = 2.12 kg is pushed into an ideal spring
whose spring constant is k = 3810 N/m. The spring is compressed x =
0.069 m and released. After losing contact with the spring, the
block slides a distance of d = 2.07 m across the floor before
coming to rest.
a) Write an expression for the coefficient of kinetic friction
between the block and the floor using the symbols given in the
problem statement...

A cart of unknown mass is pushed 3.61 cm against a hoop spring
(spring constant 59.00 N/m) and released, just as in the lab
experiment. It is observed to roll down the track (after losing
contact with the spring) at constant speed v.
A second spring has spring constant 80.00 N/m. If the experiment is
repeated, by what distance should this second spring be compressed
in order for the cart to acquire the same final speed v?
Answer in cm

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.

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