Question

A box of unknown mass is sliding with an initial speed

v_{i} = 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.

Answer #1

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.

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

A solid, spherical ball slides with speed 4.48 m/s across
frictionless ice and then encounters a rough patch with a
coefficient of kinetic friction µk = 0.198. The ball is
initially not rotating but the friction causes it to start
spinning. How far does it slide across the rough spot before it
begins to roll without slipping? Express your answer in metres.

A box of mass 730 kg is being pulled at a constant speed across
a rough horizontal floor by a constant force, F. The angle
of this force above the horizontal is such that the force you apply
is a minimum (that is, the amount of force you need to move the box
at a constant speed across the floor depends on the angle at which
you pull - find the angle which the force is a minimum). Calculate
the...

Moving at an initial speed of vi = 2.00 m/s, Jimmy slides from a
height of h = 5.00 m down a straight playground slide, which is
inclined at θ = 55° above the horizontal. At the bottom of the
slide, Jimmy is moving at vf = 9.00 m/s. By determining the change
in mechanical energy, calculate the coefficient of kinetic friction
between Jimmy and the slide.

A 5.0 kg box slides down a 5.0 m high frictionless hill,
starting from rest, across a 2.0 m wide horizontal surface, then
hits a horizontal spring with spring constant 500 N/m. The ground
under the spring is frictionless, but the 2.0 m wide horizontal
surface is rough with a coefficient of kinetic friction of
0.25.
a. What is the speed of the box just before reaching the rough
surface?
b. What is the speed of the box just before...

The speed of a block (weight= 10N) sliding across a
horizontal ice surface decreases at the rate of 1.5 m/s^2 . whats
The coefficient of kinetic friction between the ice amd the
block?

1.A 23 kg box is given a shove across a horizontal surface that
gives it an initial speed of 6 m/s. The box is eventually brought
to rest by friction. The coefficient of kinetic friction in this
example is 0.42. How far does the box go after the shove before it
stops?
??? m?
2. A 15 kg box is given a shove across a horizontal surface that
gives it an initial speed of 18 m/s. The box is eventually...

A box with a mass of 1000 kg is sliding down a ramp with
a slope of 15º at an initial speed of 8 m/s.
-Draw a free-body diagram of the car on the hill. All
forces must be labelled.
-What coefficient of kinetic friction, k, will result in
the acceleration being 0 m/s^2 ?
-If the coefficient of kinetic friction is actually
k=0.4 what is the box acceleration?
-What is the stopping distance?
-After sliding 10 m what is...

A box with mass 1.74 kg is being pulled across a rough surface
at a constant speed with a coefficient of kinetic friction
µk = 0.366. The pulling force has a magnitude of 11.2 N
and is directed at an angle 32.8 degrees above horizontal. If the
box is dragged a distance of 10.3 m, what is the total energy lost
to friction? (Hint: be sure to account for the upward component of
the pulling force, and note that the...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 8 minutes ago

asked 35 minutes ago

asked 45 minutes ago

asked 53 minutes 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