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PROBLEM 15.259 (Continued)
Coriolis acceleration.
/
2
2 (2)(1.2 ) ( 9 3 )
(7.2 in./s )
AF
× = ×− +
=
v i ij
k
Ω
PROBLEM 15.CQ1
A rectangular plate swings from arms of equal length
as shown below. What is the magnitude of the angular
velocity of the plate?
(a) 0 rad/s
(b) 1 rad/s
(c) 2 rad/s
(d) 3 rad/s
(e) Need to know the location of the center of gravity
PROBLEM 15.CQ2
Knowing that wheel A rotates with a constant angular velocity and that no
slipping occurs between ring C and wheel A and wheel B, which of the
following statements concerning the angular speeds are true?
(a) ωa = ωb
(b) ωa > ωb
(c) ωa < ωb
(d) ωa = ωc
(e) the contact points between A and C have the same acceleration
PROBLEM 15.CQ3
The ball rolls without slipping on the fixed surface as shown. What is the
direction of the velocity of Point A?
(a) (b) (c) (d) (e)
PROBLEM 15.CQ4
Three uniform rods, ABC, DCE and FGH are connected as shown. Which of
the following statements are true?
(a) ωABC = ωDCE = ωFGH
(b) ωDCE > ωABC > ωFGH
(c) ωDCE < ωABC < ωFGH
(d) ωABC > ωDCE > ωFGH
(e) ωFGH = ωDCE < ωABC
PROBLEM 15.CQ5
The disk rolls without sliding on the fixed
horizontal surface. At the instant shown, the
instantaneous center of zero velocity for rod AB
would be located in which region?
(a) region 1
(b) region 2
(c) region 3
(d) region 4
(e) region 5
(f) region 6
PROBLEM 15.CQ6
Bar BDE is pinned to two links, AB and CD. At the instant shown the
angular velocities of link AB, link CD and bar BDE are ωAB, ωCD, and
ωBDE, respectively. Which of the following statements concerning the
angular speeds of the three objects is true at this instant?
(a) ωAB = ωCD = ωBDE
(b) ωBDE > ωAB > ωCD
(c) ωAB = ωCD > ωBDE
(d) ωAB > ωCD > ωBDE
(e) ωCD > ωAB > ωBDE
PROBLEM 15.CQ7
A rear wheel drive car starts from rest and accelerates to the left so that the
tires do not slip on the road. What is the direction of the acceleration of the
point on the tire in contact with the road, that is, Point A?
(a) (b) (c) (d) (e)
PROBLEM 15.CQ8
A person walks radially inward on a platform that is rotating counterclockwise about its center. Knowing that
the platform has a constant angular velocity
ω
and the person walks with a constant speed u relative to the
platform, what is the direction of the acceleration of the person at the instant shown?
(a) Negative x
(b) Negative y
(c) Negative x and positive y
(d) Positive x and positive y
(e) Negative x and negative y
