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# A horizontal uniform bar of mass m and length L is hung horizontally on two vertical strings.

A horizontal uniform bar of mass m and length L is hung horizontally on two vertical strings. String 1 is attached to the end of the bar and string 2 is attached a distance L/4 from the other end. A monkey of mass m/2 walks from one end of the bar to the other. Find the tension T1 in string 1 at the moment that the monkey is halfway between the ends of the bar.
**Please see attachment for complete question including hints and instructions

PSS 13.2: Walking the Plank
Learning Goal: To practice Problem-Solving Strategy 13.2 for problems
involving equilbrium of rigid bodies.
in string 1 at the moment that the monkey is halfway between the ends
of the bar.
MODEL:Â Â Model the object as a simple shape.
VISUALIZE:Â Â Draw a pictorial representation that shows all forces and
distances. List known information.
point is zero.
SOLVE:Â Â The mathematical representation is based on the fact that an
object in total equilibrium experiences neither a net force nor a net
torque. Thus,
.
.
Solve the three simultaneous equations.
question.
Model
We start by making simplifying assumptions appropriate for the
situation.
The bar should be modeled as
a particle moving with constant acceleration.
a flexible rod moving with constant acceleration.
a rigid rod moving with constant acceleration.
a particle in total equilibrium.
a flexible rod in total equilibrium.
a rigid rod in total equilibrium.
Visualize
Now draw a sketch, labeling all forces and distances. Use your sketch to
Which of the following diagrams correctly represents the forces acting
at the moment described in the problem introduction? (Note that the
forces are not necessarily drawn to scale.)
What is the distance between the monkey and string 2?
.
?
the center of mass of the bar
the point of attachment of string 1
the point of attachment of string 2
the end of the bar closest to string 2
Solve
Now use the information and the insights that you have accumulated to
construct the necessary mathematical expressions and to derive the
solution.
Â Not available
Assess
When you work on a problem on your own, without the computer-provided
an assessment.
Â Not available
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