% 100 50 Kinetic Elastic Grav. Internal Total energy pot. pot. energy energy energy energy a % 100 Isolated 50 system: total Kinetic Elastic Grav. Internal Total energy energy pot. pot. energy energy constant energy energy % 100 50 Kinetic Elastic Grav. Internal Total energy pot. pot. energy energy energy energy Figure 8.13 (Conceptual Example 8.10) Three energy bar charts are shown for the system in Figure 8.12. k m2 h Figure 8.12 (Example 8.9) As the hanging block moves from its high- est elevation to its lowest, the system loses gravitational potential energy but gains elastic potential energy in the spring. Some mechanical energy is transformed to internal energy because of friction between the slid- ing block and the surface.

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The energy bar charts in 8.13 show three instants in the motion of the system in 8.12 and described in the below problem. For each bar chart, identify the configuration of the system that corresponds to the chart.

 

Two blocks are connected by a light string that passes over a frictionless pulley as shown. The block of mass m1 lies on a horizontal surface and is connected to a spring of force constant k. The system is released from rest when the spring is unstretched. If the hanging block of mass m2 falls a distance h before coming to rest, calculate the coefficient of kinetic friction between the block of mass m1 and the surface.

%
100
50
Kinetic Elastic Grav. Internal Total
energy
pot.
pot.
energy energy
energy energy
a
%
100
Isolated
50
system:
total
Kinetic Elastic Grav. Internal Total
energy
energy
pot.
pot.
energy energy
constant
energy energy
%
100
50
Kinetic Elastic
Grav. Internal Total
energy
pot.
pot.
energy energy
energy energy
Figure 8.13 (Conceptual Example 8.10) Three energy bar
charts are shown for the system in Figure 8.12.
Transcribed Image Text:% 100 50 Kinetic Elastic Grav. Internal Total energy pot. pot. energy energy energy energy a % 100 Isolated 50 system: total Kinetic Elastic Grav. Internal Total energy energy pot. pot. energy energy constant energy energy % 100 50 Kinetic Elastic Grav. Internal Total energy pot. pot. energy energy energy energy Figure 8.13 (Conceptual Example 8.10) Three energy bar charts are shown for the system in Figure 8.12.
k
m2
h
Figure 8.12 (Example 8.9) As the
hanging block moves from its high-
est elevation to its lowest, the system
loses gravitational potential energy
but gains elastic potential energy in
the spring. Some mechanical energy
is transformed to internal energy
because of friction between the slid-
ing block and the surface.
Transcribed Image Text:k m2 h Figure 8.12 (Example 8.9) As the hanging block moves from its high- est elevation to its lowest, the system loses gravitational potential energy but gains elastic potential energy in the spring. Some mechanical energy is transformed to internal energy because of friction between the slid- ing block and the surface.
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