A spring and block are in the arrangement of the figure. When the block is pulled out to x = +5.0 cm, we must apply a force of magnitude 360 N to hold it there. We pull the block to x = 12.0 cm and then release it. How much work does the spring do on the block when the block moves from x; = +5.0 cm to (a) x = +4.0 cm, (b) x = -4.0 cm, (c) x= -5.0 cm, and (d) x = -10.0 cm? X = 0 Block F; = 0 attached to spring (a) x positive F, negative (b) x negative F, positive (c) (a) Number i Units (b) Number i Units (c) Number i Units (d) Number i Units >

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Chapter1: Units, Trigonometry. And Vectors
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A spring and block are in the arrangement of the figure. When the block is pulled out to x = +5.0 cm, we must apply a force of
magnitude 36O N to hold it there. We pull the block to x = 12.0 cm and then release it. How much work does the spring do on the
block when the block moves from x; = +5.0 cm to (a) x = +4.0 cm, (b) x = -4.0 cm, (c) x= -5.0 cm, and (d) x = -10.0 cm?
X = 0
Block
F, = 0
attached
to spring
(a)
x positive
F, negative
P
(b)
x negative
F, positive
(c)
(a) Number
i
Units
(b) Number
i
Units
(c) Number
i
Units
(d) Number
i
Units
>
>
>
Transcribed Image Text:A spring and block are in the arrangement of the figure. When the block is pulled out to x = +5.0 cm, we must apply a force of magnitude 36O N to hold it there. We pull the block to x = 12.0 cm and then release it. How much work does the spring do on the block when the block moves from x; = +5.0 cm to (a) x = +4.0 cm, (b) x = -4.0 cm, (c) x= -5.0 cm, and (d) x = -10.0 cm? X = 0 Block F, = 0 attached to spring (a) x positive F, negative P (b) x negative F, positive (c) (a) Number i Units (b) Number i Units (c) Number i Units (d) Number i Units > > >
The figure shows three forces applied to a trunk that moves leftward by 2.58 m over a frictionless floor. The force magnitudes are
F1 = 4.61 N, F2 = 9.46 N, and F3 = 3.04 N, and the indicated angle is 0 = 60°. (a) During the displacement, what is the net work done on
the trunk by the three applied forces, the gravitational force, and the normal force? (b) Is there a net transfer of energy to or from
the trunk? (c) Does the kinetic energy of the trunk increase or decrease?
(a) Number
i -0.36
Units
J
(b)
from
(c)
decrease
Transcribed Image Text:The figure shows three forces applied to a trunk that moves leftward by 2.58 m over a frictionless floor. The force magnitudes are F1 = 4.61 N, F2 = 9.46 N, and F3 = 3.04 N, and the indicated angle is 0 = 60°. (a) During the displacement, what is the net work done on the trunk by the three applied forces, the gravitational force, and the normal force? (b) Is there a net transfer of energy to or from the trunk? (c) Does the kinetic energy of the trunk increase or decrease? (a) Number i -0.36 Units J (b) from (c) decrease
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