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PROBLEM 4.9
Three loads are applied as shown to a light beam supported by
cables attached at B and D. Neglecting the weight of the beam,
determine the range of values of Q for which neither cable becomes
slack when
0.P
PROBLEM 4.10
Three loads are applied as shown to a light beam supported by
cables attached at B and D. Knowing that the maximum allowable
tension in each cable is 12 kN and neglecting the weight of the
beam, determine the range of values of Q for which the loading is
safe when 0.P
PROBLEM 4.11
For the beam of Prob. 4.10, determine the range of values of Q for
which the loading is safe when P = 5 kN.
PROBLEM 4.12
For the beam of Sample Prob. 4.2, determine the range of values
of P for which the beam will be safe, knowing that the maximum
allowable value of each of the reactions is 25 kips and that the
reaction at A must be directed upward.
PROBLEM 4.13
The maximum allowable value of each of the reactions is 180 N.
Neglecting the weight of the beam, determine the range of the
distance d for which the beam is safe.
PROBLEM 4.14
For the beam and loading shown, determine the range of
the distance a for which the reaction at B does not exceed
100 lb downward or 200 lb upward.
PROBLEM 4.15
Two links AB and DE are connected by a bell crank as
shown. Knowing that the tension in link AB is 720 N,
determine (a) the tension in link DE, (b) the reaction
at C.
PROBLEM 4.16
Two links AB and DE are connected by a bell crank as
shown. Determine the maximum force that may be
safely exerted by link AB on the bell crank if the
maximum allowable value for the reaction at C is
1600 N.
PROBLEM 4.17
The required tension in cable AB is 200 lb. Determine (a) the
vertical force P that must be applied to the pedal, (b) the
corresponding reaction at C.
PROBLEM 4.18
Determine the maximum tension that can be developed in cable
AB if the maximum allowable value of the reaction at C is 250 lb.
