Question

A 6.53-kg block initially at rest is pulled to the right along a horizontal surface by a constant force of 125 N applied at an angle θ above the horizontal. The coefficient of kinetic friction between the block and the horizontal surface is 0.150. At what angle θ above the horizontal surface should the force be applied to achieve the largest possible speed after the block has moved 5.00 m to the right?

Answer #1

A 4.0-kg block initially at rest is pulled to the right along a
horizontal surface by a constant horizontal force of 12 N.
Find the speed of the block after it has moved 3.0 m if the
surfaces in contact have a coefficient of kinetic friction of 0.17
_____.
a. 1.8 m/s
b. 3.5 m/s
c. 2.8 m/s
d. 5.3 m/s
Suppose the force is applied at an angle. At what angle should
the force be applied to achieve the...

A 6.0-kg block initially at rest is pulled to the right along a
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a. Draw a free-body diagram of the situation.
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block 3m?
c. Find the work done by the force of friction on the block when
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d. Use the work-energy principle to find...

An 8.0 kg block initially at rest is pulled to the right by a 12
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A 0.400kg0.400kg block is initially at rest on a
horizontal surface, and is attached to an initially unstreteched
spring with a force constant of 2.00N/m2.00N/m. The coefficient of
kinetic friction between the block and the surface is 0.4000.400. A
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(A) Draw a free body diagram showing all forces on the block as
it moves to the right.
Determine
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and
(C)...

A 0.400kg0.400kg block is initially at rest on a
horizontal surface, and is attached to an initially unstreteched
spring with a force constant of 2.00N/m2.00N/m. The coefficient of
kinetic friction between the block and the surface is 0.4000.400. A
constant force of 2.30N2.30N to the right is applied to the
block.
(A) Draw a free body diagram showing all forces on the block as
it moves to the right.
Determine
(B) the initial Kinetic Energy of the block: J,
and
(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...

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...

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...

A 2.60 kg block is initially at rest on a horizontal surface. A
horizontal force ModifyingAbove Upper F With right-arrow of
magnitude 6.59 N and a vertical force ModifyingAbove Upper P With
right-arrow are then applied to the block (see the figure). The
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right-arrow is...

A 4.82 kg block located on a horizontal frictionless floor is
pulled by a cord that exerts a force F=12.4N at an angle
theta=25.0degrees above the horizontal, as shown. What is the
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applied?
What is the horizontal speed of the block 4.30 seconds after it
starts moving?
What is the magnitude of the normal force acting on the block
when the force F is acting on it?
If, instead,...

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