Question

A mass m = 13 kg is pulled along a horizontal floor, with a
coefficient of kinetic friction μ_{k} = 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 parallel to the surface) and has a
tension T = 35 N.

1)What is the work done by tension before the block gets to the incline?

2)What is the work done by friction as the block slides on the flat horizontal surface?

3)What is the speed of the block right before it begins to travel up the incline?

4)How far up the incline does the block travel before coming to rest?

5)What is the work done by gravity as it comes to rest?

Answer #1

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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...

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You are pulling a
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What forces are acting
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Group of answer choices
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Gravity and tension
Friction, gravity and tension
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N
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kJ
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