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PROBLEM 18.64
Determine the rate of change
G
H
of the angular momentum
H
G
of the disk of Prob. 18.8 for an arbitrary value of
,
knowing that the disk has an angular velocity =
i and an
angular acceleration =
i.
PROBLEM 18.64 (Continued)
PROBLEM 18.65
A slender, uniform rod AB of mass m and a vertical shaft CD, each
of length 2b, are welded together at their midpoints G. Knowing that
the shaft rotates at the constant rate
, determine the dynamic
reactions at C and D.
PROBLEM 18.65 (Continued)
PROBLEM 18.66
A thin homogeneous triangular plate of weight 10 pounds is welded to a light
vertical axle supported by bearings at A and B. Knowing that the plate rotates
at the constant rate
8rad/s,
determine the dynamic reactions at A and B.
PROBLEM 18.66 (Continued)
PROBLEM 18.67
The assembly shown consists of pieces of sheet aluminum of
uniform thickness and of total weight 2.7 lb welded to a light
axle supported by bearings at A and B. Knowing that the
assembly rotates at the constant rate
240
rpm, determine
the dynamic reactions at A and B.
PROBLEM 18.67 (Continued)
PROBLEM 18.67 (Continued)
PROBLEM 18.68
The 8-kg shaft shown has a uniform cross section.
Knowing that the shaft rotates at the constant rate
12 rad/s,
determine the dynamic reactions at A and B.
