Question

25) 6.50 kg block of ice sliding on the floor at 10.0 m/s encounters a rough section for 4.0 m that has a coefficient of kinetic friction of 0.820.

A) draw and label the figure

B) find the speed of the block after it passes the rough section

C) the block encounters a spring and comes to rest after compressing the spring for 20 cm. FIND the spring constant of the spring

Answer #1

Solution of the problem given below,

A 2.5-kg block is sliding along a rough horizontal surface and
collides with a horizontal spring whose spring constant is 320 N/m.
Unstretched, the spring is 20.0 cm long. The block causes the
spring to compress to a length of 12.5 cm as the block temporarily
comes to rest. The coefficient of kinetic friction between the
block and the horizontal surface is 0.25. a) How much work is done
by the spring as it brings the block to rest? b)...

A box of unknown mass is sliding with an initial speed
vi = 5.70 m/s
across a horizontal frictionless warehouse floor when it
encounters a rough section of flooring
d = 3.50 m
long. The coefficient of kinetic friction between the rough
section of flooring and the box is 0.100. Using energy
considerations, determine the final speed of the box (in m/s) after
sliding across the rough section of flooring.

As shown in the figure below, a box of mass m = 6.00 kg is
sliding across a horizontal frictionless surface with an initial
speed vi= 2.40 m/s when it encounters a spring of constant k = 2350
N/m.
The box comes momentarily to rest after compressing the spring
some amount xc. Determine the final
compression xc (in m) of the
spring.

A
4.80 kg chunk of ice is sliding at 11.5 m/s on the floor of an
ice-covered valley when it collides with and sticks to another 4.80
kg chunk of ice that is initially at rest. Since the valley is icy,
there is no friction. After the collision, the blocks slide
partially up a hillside and then slide back down. How fast are they
moving when they reach the valley floor again?

A 1.40 kg block slides with a speed of 0.950 m/s on a
frictionless horizontal surface until it encounters a spring with a
force constant of 734 N/m. The block comes to rest after
compressing the spring 4.15 cm. Find the spring potential, U, the
kinetic energy of the block, K, and the total mechanical energy of
the system, E, for compressions of (a) 0 cm, (b) 1.00 cm, (c) 2.00
cm, (d) 3.00 cm, (e) 4.00 cm

A 1.0 kg block of wood is to be launched across a slippery floor
by a compresssed spring. The stiffness constant of the spring is
100 N/m, and the spring is initially compressed by 0.50 meters. If
the block slides 10 meters before coming to rest, what is the
coefficient of sliding friction? If the block were to slide 0.50
meters - the very same distance the spring was compressed - what
would be the coefficient of sliding friction?

A block with mass m = 14 kg rests on a frictionless table and is
accelerated by a spring with spring constant k = 4399 N/m after
being compressed a distance x1 = 0.468 m from the
spring’s unstretched length. The floor is frictionless except for a
rough patch a distance d = 2 m long. For this rough path, the
coefficient of friction is μk = 0.48.
1)How much work is done by the spring as it accelerates the...

20.0-kg block initially sits at rest on a rough horizontal
floor. One end of a string is attached to the block. You pull on
the other end of the string with a force of 40.0 N so that the
string makes an angle of 30.0° with the horizontal. After pulling
the block 3.00 m across the floor, it is traveling with a speed of
1.25 m/s. What is the magnitude of the force of kinetic friction
exerted on the block...

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 man pushes a 4.0 kg block against a horizontal spring,
compressing the spring by 20 cm. Then the man releases the block,
and the spring sends it sliding across a tabletop. It stops 90 cm
from where you released it. The spring constant is 325 N/m. What is
the block–table coefficient of kinetic friction?
A.
0.47
B.
0.97
C.
0.57
D.
0.37

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 18 minutes ago

asked 46 minutes ago

asked 51 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago