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PROBLEM 4.142
A 3200-lb forklift truck is used to lift a 1700-lb crate.
Determine the reaction at each of the two (a) front wheels A,
(b) rear wheels B.
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PROBLEM 4.143
The lever BCD is hinged at C and attached to a control rod at B. If
P 100 lb, determine (a) the tension in rod AB, (b) the reaction at C.
Copyright © McGraw-Hill Education. Permission required for reproduction or display.
PROBLEM 4.144
Determine the reactions at A and B when (a) 0,h
(b)
200 mm.h
Copyright © McGraw-Hill Education. Permission required for reproduction or display.
PROBLEM 4.145
Neglecting friction and the radius of the pulley,
determine (a) the tension in cable ADB, (b) the reaction
at C.
PROBLEM 4.146
Bar AD is attached at A and C to collars that can move
freely on the rods shown. If the cord BE is vertical (
0),
determine the tension in the cord and the reactions at A and
C.
Copyright © McGraw-Hill Education. Permission required for reproduction or display.
PROBLEM 4.147
A slender rod AB, of weight W, is attached to blocks A and B
that move freely in the guides shown. The constant of the spring
is k, and the spring is unstretched when
0.
(a) Neglecting the
weight of the blocks, derive an equation in W, k, l, and
that
must be satisfied when the rod is in equilibrium. (b) Determine
the value of
when 75 lb,W 30 in.,l and
3 lb/in.k
PROBLEM 4.148
Determine the reactions at A and B when a 150 mm.
PROBLEM 4.149
For the frame and loading shown, determine the reactions at A and C.
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PROBLEM 4.150
A 200-mm lever and a 240-mm-diameter pulley
are welded to the axle BE that is supported by
bearings at C and D. If a 720-N vertical load is
applied at A when the lever is horizontal,
determine (a) the tension in the cord, (b) the
reactions at C and D. Assume that the bearing at
D does not exert any axial thrust.
Copyright © McGraw-Hill Education. Permission required for reproduction or display.
PROBLEM 4.151
The 45-lb square plate shown is supported by three vertical
wires. Determine the tension in each wire.
