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’ 4.2 The boom on a 9500—1b truck is used to unload a pallet of shingles}?
of weight 3500 lb. Determine the reaction at each of the two (a) rear wheels”
a B, (19) front wheels C.
I 1.3 ft
Fig. P42
4.13 For the beam and loadi
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components of the 900-N force,
2:73 Determine (a) the x, y, and :4
forms with the coordinate axes,
' 1900 N {a (b) the angles 6x, Gy, and 92 that the force
£2.89!) A transmission tower is held by three guy wires anchored by bolts
‘ C
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2.24 Determine the x and y components of each of the
forces shown.
A
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2.33 Determine the resultant of the three forces of Prob. 2.24.
2.44 Two cables are tied together at C and are loaded as shown. De-
termine the tension (
ENCE 4318
TEST 3
l. A channel of rectangular section, 7.5 ft wide, is discharging water at a rate of 200
ﬁlls with an average velooity of 3.0 ﬁfs. Find
a) The speciﬁc energy of the ﬂowing water,
b) Depth of water when the speciﬁc energy is minimum,
c) Vel
ENCE 4318
TEST 2
1. Water is ﬂowing in a trapezoidal channel with 10 ft bottom width and 2H/IV side
slopes. The channel is running on a slope of 0.00778 ft/ft and the ﬂow exerts a
shear stress of 1.5 lbsa'ﬁz on the channel bed. What is the depth of ﬂow in
1. A solid cube with a side length of 0.4 ﬂ and a weight of 110 lb slides down a
smooth surface that is inclined at 45 degrees to the horizontal. The block slides
on a ﬁlm of oil with a viscosity of 1.85 x 10'2 lb—s/ﬁz. If the velocity of the block
is 1.2