Quiz-1
The cable BC carries a tension of 750 N. Write this tension as a force T acting on point B in
terms of the unit vectors i, j, and k. The elbow at A forms a right angle.
Quiz-2
A 1.8 lb vertical force is applied to the knob of the window-opener mechanism when the crank
BC is horizontal. Determine the moment of the force about point A and about line AB.
The light right-angle boom which supports the 400-kg cylinder is supported by three cables and a balland-socket joint at O attached to the vertical x-y surface. Determine the reactions at O and the cable
tensions.
Quiz-3
Under nonuniform and slippery road conditions, the four forces shown are exerted on the four
drive wheels of the all-wheel-drive vehicle. Determine the resultant of this system and the x- and
y- intercepts of its line of action. Note that the front
Problem 3.56 The triangular plate ABC is supported by
ball and socket joints at B and D and is held in the
position shown by cables AE and CF. If the force
Exerted by cable CF at C is 33N, determine the
moment of that force about the line joining points D
The part shown is supported by bearings at A and B and subjected to the pair of 900-N forces at C and D.
The force Fs is applied at E as shown, where E is in plane ABCD. Determine the magnitude of Fs and
magnitudes of Fa and Fb of the bearing forces at A
PROBLEM 5.73
Determine the reactions at the beam supports for the given loading.
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PROBLEM 5.111 y
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A mounting bracket for electronic components is formed from
sheet metal of uniform thickness. Locate the center of gravity
of the bracket.
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