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PROBLEM 10.61
Using the method of Section 10.8, solve Problem 10.31.
PROBLEM 10.31
Solve Problem 10.30 assuming that force
P
is
moved to C and acts vertically downward.
PROBLEM 10.62
Using the method of Sec. 10.8, solve Prob. 10.30.
Problem 10.30:
Two bars AD and DG are connected by a pin at
D and by a spring AG. Knowing that the spring is 300 mm long
when unstretched and that the constant of the spring is 5 kN/m,
determine the value of x corresponding to equilibrium when a
900-N load is applied at E as shown.
PROBLEM 10.63
Using the method of Section 10.8, solve Problem 10.33.
PROBLEM 10.33
Two 5-kg bars AB and BC are connected by a pin
at B and by a spring DE. Knowing that the spring is 150 mm long
when unstretched and that the constant of the spring is 1 kN/m,
determine the value of x corresponding to equilibrium.
PROBLEM 10.64
Using the method of Section 10.8, solve Problem 10.35.
PROBLEM 10.35 A vertical force P of magnitude 150 N is applied to
end E of cable CDE, which passes over a small pulley D and is
attached to the mechanism at C. The constant of the spring is k 4
kN/m, and the spring is unstretched when
0. Neglecting the weight
of the mechanism and the radius of the pulley, determine the value of
corresponding to equilibrium.
PROBLEM 10.65
Using the method of Section 10.8, solve Problem 10.37.
PROBLEM 10.37 and 10.38
Knowing that the constant of spring CD is
k and that the spring is unstretched when rod ABC is horizontal, determine
the value of
corresponding to equilibrium for the data indicated.
PROBLEM 10.37
300 N, 400 mm, 5 kN/m.Pl k
PROBLEM 10.66
Using the method of Section 10.8, solve Problem 10.38.
PROBLEM 10.37 and 10.38 Knowing that the constant of spring CD is k
and that the spring is unstretched when rod ABC is horizontal, determine
the value of
corresponding to equilibrium for the data indicated.
PROBLEM 10.38 75 lb, 15 in., 20 lb/in.Pl k
PROBLEM 10.67
Show that equilibrium is neutral in Problem 10.1.
PROBLEM 10.1
Determine the vertical force
P
that must be
applied at C to maintain the equilibrium of the linkage.
PROBLEM 10.68
Show that equilibrium is neutral in Problem 10.7.
PROBLEM 10.7
The two-bar linkage shown is supported by a pin
and bracket at B and a collar at D that slides freely on a vertical rod.
Determine the force
P
required to maintain the equilibrium of the
linkage.
PROBLEM 10.69
Two uniform rods, each of mass m, are attached to gears of
equal radii as shown. Determine the positions of equilibrium of
the system and state in each case whether the equilibrium is
stable, unstable, or neutral.
PROBLEM 10.70
Two uniform rods, AB and CD, are attached to gears of
equal radii as shown. Knowing that
8 lb
AB
W
and
4 lb,
CD
W
determine the positions of equilibrium of the
system and state in each case whether the equilibrium is
stable, unstable, or neutral.
