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56.
REASONING
Since the wire beneath the limb is at rest, it is in equilibrium and the
net force acting on it must be zero.
Three forces comprise the net force, the 151N
force from the limb, the 447N tension force from the left section of the wire, and
the tension force
T
from the right section of the wire.
We will resolve the forces
into components and set the sum of the
x
components and the sum of the
y
components separately equal to zero.
In so doing we will obtain two equations
containing the unknown quantities, which are the horizontal and vertical components
of the tension force
T
.
These two equations will be solved simultaneously to give
values for the two unknowns.
Knowing the components of the tension force, we can
determine its magnitude and direction.
SOLUTION
Let
T
x
and
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This note was uploaded on 01/29/2010 for the course CALC 01:640:135 taught by Professor Soffer during the Spring '08 term at Rutgers.
 Spring '08
 SOFFER

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