Question

1. A block of mass is pulled up an incline. F= 34 N, mass= 6kg and angle= 24 ˚. What is the acceleration of the block if the coefficient of kinetic friction between the block and incline is 0.12.

2. A 4.0Kg block slides down a 37° incline at a constant speed. 16N force is applied up and parallel to the incline. What is the coefficient of kinetic friction between the block and the surface of the incline?

Answer #1

A block of mass 4.0Kg slides
down an incline plane of length 10 meters that makes an angle of 30
degrees with the horizontal. The coefficient of kinetic friction
between the block and the incline is 0.3. If the block is has an
initial speed of 2mis down the incline at the top of the incline,
then what is the speed at the bottom? Show calculations. Indicate
answer.
In the previous problem, what
was the gain in Kinetic Energy? Show...

A crate of mass 10.6 kg is pulled up a rough incline with an
initial speed of 1.52 m/s. The pulling force is 94 N parallel to
the incline, which makes an angle of 20.2° with the horizontal. The
coefficient of kinetic friction is 0.400, and the crate is pulled
4.94 m.
(a) How much work is done by the gravitational force on the
crate?
(b) Determine the increase in internal energy of the crate–incline
system owing to friction.
(c)...

A mass m = 13 kg is pulled along a horizontal floor, with a
coefficient of kinetic friction μk = 0.07, for a
distance d = 5.1 m. Then the mass is continued to be pulled up a
frictionless incline that makes an angle θ = 33° with the
horizontal. The entire time the massless rope used to pull the
block is pulled parallel to the incline at an angle of θ = 33°
(thus on the incline it is...

An 82.0 N box is pulled 15.0 m up a 30° incline by an applied
force of 101 N that points upward, parallel to the incline. If the
coefficient of kinetic friction between box and incline is 0.220,
calculate the change in the kinetic energy of the box.

A crate of mass 9.6 kg is pulled up a rough incline with an
initial speed of 1.40 m/s. The pulling force is 98 N parallel to
the incline, which makes an angle of 19.5° with the horizontal. The
coefficient of kinetic friction is 0.400, and the crate is pulled
4.98 m.
(a) How much work is done by the gravitational force on the
crate?
J
(b) Determine the increase in internal energy of the crate–incline
system owing to friction....

A crate of mass 9.6 kg is pulled up a rough incline with an
initial speed of 1.52 m/s. The pulling force is 104 N parallel to
the incline, which makes an angle of 20.4° with the horizontal. The
coefficient of kinetic friction is 0.400, and the crate is pulled
4.92 m.
(a) How much work is done by the gravitational force on the
crate?
J
(b) Determine the increase in internal energy of the crate–incline
system owing to friction....

A crate of mass 10.2 kg is pulled up a rough incline with an
initial speed of 1.56 m/s. The pulling force is 92 N parallel to
the incline, which makes an angle of 19.0° with the horizontal. The
coefficient of kinetic friction is 0.400, and the crate is pulled
5.04 m.
(a) How much work is done by the gravitational force on the
crate?
J
(b) Determine the increase in internal energy of the crate–incline
system owing to friction....

A block of mass m is initially held at rest at point P on an
incline that makes an angle q with respect to horizontal. The
coefficient of kinetic friction between the block and the incline
is mk. After the block slides down the incline from point P, it
starts to slide without friction up a vertical circular track of
radius R. When it reaches the top of the circle, the normal force
(downward) by the track to the block...

Block A of mass
mA=6kg ,slides down an incline from a height of 10 m
from the ground. Block A then collide with block B, with a mass
mB=8kg which is at rest in the ground. The collision is
elastic. There is no friction between the blocks and the incline
nor between the blocks and the ground.
a) Find the velocity
of A before it collides with B ( 5 points)
b) Find the maximum
height that block A climbs...

A mass m = 12 kg is pulled along a horizontal floor with NO
friction for a distance d =7.2 m. Then the mass is pulled up an
incline that makes an angle θ = 30° with the horizontal and has a
coefficient of kinetic friction μk = 0.49. The entire
time the massless rope used to pull the block is pulled parallel to
the incline at an angle of θ = 30° (thus on the incline it is
parallel...

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