Engineering Mechanics: Dynamics
8th Edition
ISBN: 9781118885840
Author: James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher: WILEY
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Chapter 5.5, Problem 91P
To determine
The speeds of points A and B of the slender bar.
The location of the instantaneous center of zero velocity.
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2. Express the following complex numbers in rectangular form.
(a) z₁ = 2еjл/6
(b) Z2=-3e-jπ/4
(c) Z3 =
√√√3e-j³/4
(d) z4 = − j³
A prismatic beam is built into a structure. You can consider the boundary conditions at A and B to be
fixed supports. The beam was originally designed to withstand a triangular distributed load, however,
the loading condition has been revised and can be approximated by a cosine function as shown in the
figure below. You have been tasked with analysing the structure. As the beam is prismatic, you can
assume that the bending rigidity (El) is constant.
wwo cos
2L
x
A
B
Figure 3: Built in beam with a varying distributed load
In order to do this, you will:
a. Solve the reaction forces and moments at point A and B.
Hint: you may find it convenient to use the principal of superposition.
(2%)
b. Plot the shear force and bending moment diagrams and identify the maximum shear force
and bending moment.
(2%)
c. Develop an expression for the vertical deflection. Clearly state your expression in terms of x.
(1%)
Question 1: Beam Analysis
Two beams (ABC and CD) are connected using a pin immediately to the left of Point C. The pin acts
as a moment release, i.e. no moments are transferred through this pinned connection. Shear forces
can be transferred through the pinned connection. Beam ABC has a pinned support at point A and a
roller support at Point C. Beam CD has a roller support at Point D. A concentrated load, P, is applied
to the mid span of beam CD, and acts at an angle as shown below. Two concentrated moments, MB
and Mc act in the directions shown at Point B and Point C respectively. The magnitude of these
moments is PL.
Moment Release
A
B
с
°
MB = PL
Mc=
= PL
-L/2-
-L/2-
→
P
D
Figure 1: Two beam arrangement for question 1.
To analyse this structure, you will:
a) Construct the free body diagrams for the structure shown above. When constructing your
FBD's you must make section cuts at point B and C. You can represent the structure as three
separate beams. Following this, construct the…
Chapter 5 Solutions
Engineering Mechanics: Dynamics
Ch. 5.2 - Prob. 1PCh. 5.2 - The circular sector rotates about a fixed axis...Ch. 5.2 - Prob. 3PCh. 5.2 - Prob. 4PCh. 5.2 - When switched on, the grinding machine accelerates...Ch. 5.2 - The small cart is released from rest in position 1...Ch. 5.2 - The flywheel has a diameter of 600 mm and rotates...Ch. 5.2 - Prob. 8PCh. 5.2 - Prob. 9PCh. 5.2 - The angular acceleration of a body which is...
Ch. 5.2 - The device shown rotates about the fixed z-axis...Ch. 5.2 - Prob. 12PCh. 5.2 - The T-shaped body rotates about a horizontal axis...Ch. 5.2 - Prob. 14PCh. 5.2 - Prob. 15PCh. 5.2 - Prob. 16PCh. 5.2 - The bent flat bar rotates about a fixed axis...Ch. 5.2 - At time t = 0, the arm is rotating about the fixed...Ch. 5.2 - A variable torque is applied to a rotating wheel...Ch. 5.2 - Prob. 20PCh. 5.2 - Prob. 21PCh. 5.2 - Prob. 22PCh. 5.2 - Prob. 23PCh. 5.2 - Prob. 24PCh. 5.2 - Prob. 25PCh. 5.2 - During its final spin cycle, a front-loading...Ch. 5.2 - Prob. 27PCh. 5.2 - Prob. 28PCh. 5.3 - Slider A moves in the horizontal slot with a...Ch. 5.3 - The fixed hydraulic cylinder C imparts a constant...Ch. 5.3 - Prob. 31PCh. 5.3 - At the instant under consideration, the hydraulic...Ch. 5.3 - The hydraulic cylinder D is causing the distance...Ch. 5.3 - The Scotch-yoke mechanism converts rotational...Ch. 5.3 - Prob. 35PCh. 5.3 - The wheel of radius r rolls without slipping, and...Ch. 5.3 - Link OA rotates with a clockwise angular velocity...Ch. 5.3 - Determine the acceleration of the shaft B for θ =...Ch. 5.3 - Prob. 39PCh. 5.3 - Prob. 40PCh. 5.3 - Boom OA is being elevated by the rope-and-pulley...Ch. 5.3 - The hydraulic cylinder imparts a constant upward...Ch. 5.3 - Prob. 43PCh. 5.3 - The rod OB slides through the collar pivoted to...Ch. 5.3 - Prob. 45PCh. 5.3 - Prob. 46PCh. 5.3 - Link OA is given a clockwise angular velocity ω =...Ch. 5.3 - Prob. 48PCh. 5.3 - Derive an expression for the upward velocity v of...Ch. 5.3 - Prob. 50PCh. 5.3 - Show that the expressions v = rω and at = rα hold...Ch. 5.3 - Prob. 52PCh. 5.3 - Prob. 53PCh. 5.3 - Prob. 54PCh. 5.3 - Prob. 55PCh. 5.3 - Prob. 56PCh. 5.3 - Prob. 57PCh. 5.3 - The punch is operated by a simple harmonic...Ch. 5.4 - The right-angle link AB has a clockwise angular...Ch. 5.4 - The uniform rectangular plate moves on the...Ch. 5.4 - The cart has a velocity of 4 ft/sec to the right....Ch. 5.4 - Prob. 62PCh. 5.4 - The speed of the center of the earth as it orbits...Ch. 5.4 - Prob. 64PCh. 5.4 - The circular disk of radius 8 in. is released very...Ch. 5.4 - For a short interval, collars A and B are sliding...Ch. 5.4 - Prob. 67PCh. 5.4 - The magnitude of the absolute velocity of point A...Ch. 5.4 - Prob. 69PCh. 5.4 - Prob. 70PCh. 5.4 - Determine the angular velocity of bar AB just...Ch. 5.4 - For the instant represented, point B crosses the...Ch. 5.4 - Prob. 73PCh. 5.4 - For a short interval, collars A and B are sliding...Ch. 5.4 - Determine the angular velocity of link BC for the...Ch. 5.4 - The elements of a switching device are shown. If...Ch. 5.4 - Determine the angular velocity ωAB of link AB and...Ch. 5.4 - Determine the angular velocity ωAB of link AB and...Ch. 5.4 - The rotation of the gear is controlled by the...Ch. 5.4 - Prob. 80PCh. 5.4 - Prob. 81PCh. 5.4 - The ends of the 0.4-m slender bar remain in...Ch. 5.4 - Prob. 83PCh. 5.4 - Prob. 84PCh. 5.4 - Pin P on the end of the horizontal rod slides...Ch. 5.4 - A four-bar linkage is shown in the figure (the...Ch. 5.4 - The mechanism is part of a latching device where...Ch. 5.4 - The elements of the mechanism for deployment of a...Ch. 5.4 - Prob. 89PCh. 5.4 - Prob. 90PCh. 5.5 - The slender bar is moving in general plane motion...Ch. 5.5 - Prob. 92PCh. 5.5 - Prob. 93PCh. 5.5 - Roller B of the quarter-circular link has a...Ch. 5.5 - Prob. 95PCh. 5.5 - Prob. 96PCh. 5.5 - Prob. 97PCh. 5.5 - At a certain instant vertex B of the...Ch. 5.5 - Prob. 99PCh. 5.5 - Prob. 100PCh. 5.5 - The mechanism of Prob. 5/100 is now shown in a...Ch. 5.5 - Prob. 102PCh. 5.5 - Prob. 103PCh. 5.5 - The switching device of Prob. 5/76 is repeated...Ch. 5.5 - The shaft of the wheel unit rolls without slipping...Ch. 5.5 - Prob. 106PCh. 5.5 - The attached wheels roll without slipping on the...Ch. 5.5 - The mechanism of Prob. 5/77 is repeated here. By...Ch. 5.5 - Prob. 109PCh. 5.5 - Prob. 110PCh. 5.5 - Prob. 111PCh. 5.5 - Prob. 112PCh. 5.5 - Prob. 113PCh. 5.5 - Solve for the speed of point D in Prob. 5/64 by...Ch. 5.5 - Link OA has a counterclockwise angular velocity =...Ch. 5.5 - Vertical oscillation of the spring-loaded plunger...Ch. 5.5 - A device which tests the resistance to wear of two...Ch. 5.5 - Motion of the roller A against its restraining...Ch. 5.5 - In the design of the mechanism shown, collar A is...Ch. 5.5 - Determine the angular velocity ω of the ram head...Ch. 5.6 - For the instant represented, corner C of the...Ch. 5.6 - The two rotor blades of 800-mm radius rotate...Ch. 5.6 - Prob. 123PCh. 5.6 - Determine the angular velocity and angular...Ch. 5.6 - The wheel of radius R rolls without slipping, and...Ch. 5.6 - The 9-m steel beam is being hoisted from its...Ch. 5.6 - The bar of Prob. 5/82 is repeated here. The ends...Ch. 5.6 - Prob. 128PCh. 5.6 - Prob. 129PCh. 5.6 - Prob. 130PCh. 5.6 - Prob. 131PCh. 5.6 - Prob. 132PCh. 5.6 - Prob. 133PCh. 5.6 - The switching device of Prob. 5/76 is repeated...Ch. 5.6 - Prob. 135PCh. 5.6 - Prob. 136PCh. 5.6 - If the wheel in each case rolls on the circular...Ch. 5.6 - Prob. 138PCh. 5.6 - The system of Prob. 5/101 is repeated here. Crank...Ch. 5.6 - Prob. 140PCh. 5.6 - The mechanism of Prob. 5/77 is repeated here. The...Ch. 5.6 - The system of Prob. 5/84 is repeated here. If the...Ch. 5.6 - The shaft of the wheel unit rolls without slipping...Ch. 5.6 - Plane motion of the triangular plate ABC is...Ch. 5.6 - The system of Prob. 5/110 is repeated here. At the...Ch. 5.6 - The velocity of roller A is vA = 0.5 m/s to the...Ch. 5.6 - In the design of this linkage, motion of the...Ch. 5.6 - The mechanism of Prob. 5/112 is repeated here. If...Ch. 5.6 - The bar AB from Prob. 5/74 is repeated here. If...Ch. 5.6 - If the piston rod of the hydraulic cylinder C has...Ch. 5.6 - Prob. 151PCh. 5.6 - Prob. 152PCh. 5.6 - The four-bar linkage of Prob. 5/86 is repeated...Ch. 5.6 - Prob. 154PCh. 5.6 - Prob. 155PCh. 5.6 - Prob. 156PCh. 5.7 - The disk rotates about a fixed axis through O with...Ch. 5.7 - The sector rotates with the indicated angular...Ch. 5.7 - The slotted wheel rolls to the right without...Ch. 5.7 - The disk rolls without slipping on the horizontal...Ch. 5.7 - Prob. 161PCh. 5.7 - An experimental vehicle A travels with constant...Ch. 5.7 - Prob. 163PCh. 5.7 - Prob. 164PCh. 5.7 - The small collar A is sliding on the bent bar with...Ch. 5.7 - Prob. 167PCh. 5.7 - Vehicle A travels west at high speed on a...Ch. 5.7 - Prob. 169PCh. 5.7 - Prob. 170PCh. 5.7 - Prob. 171PCh. 5.7 - Prob. 172PCh. 5.7 - Prob. 173PCh. 5.7 - Prob. 174PCh. 5.7 - Prob. 175PCh. 5.7 - Prob. 176PCh. 5.7 - Prob. 177PCh. 5.7 - Refer to the figure for Prob. 5/177. Car A is...Ch. 5.7 - For the instant represented, link CB is rotating...Ch. 5.7 - The disk rotates about a fixed axis through point...Ch. 5.7 - All conditions of the previous problem remain the...Ch. 5.7 - Prob. 182PCh. 5.7 - Prob. 183PCh. 5.7 - One wheel of an experimental vehicle F, which has...Ch. 5.8 - Prob. 185RPCh. 5.8 - Prob. 186RPCh. 5.8 - Prob. 187RPCh. 5.8 - Prob. 188RPCh. 5.8 - Prob. 189RPCh. 5.8 - Roller B of the linkage has a velocity of 0.75 m/s...Ch. 5.8 - Prob. 191RPCh. 5.8 - Prob. 192RPCh. 5.8 - Prob. 193RPCh. 5.8 - Prob. 194RPCh. 5.8 - Prob. 195RPCh. 5.8 - Prob. 196RPCh. 5.8 - The isosceles triangular plate is guided by the...Ch. 5.8 - Prob. 198RPCh. 5.8 - The hydraulic cylinder C imparts a velocity υ to...Ch. 5.8 - Prob. 200RPCh. 5.8 - The figure illustrates a commonly used...Ch. 5.8 - Prob. 202RPCh. 5.8 - Prob. 203RPCh. 5.8 - Prob. 204RPCh. 5.8 - Prob. 206RPCh. 5.8 - For the slider-crank configuration shown, derive...Ch. 5.8 - Prob. 212RP
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