Unformatted text preview: tical. ForDE isposition:
BD are aligned horizontally, and link this vertical.
a) locate the instant center for link BD.
Find: For this position: b) determine the angular velocities of links BD and DE. Write your answers as
• Locate the instant center for link BD.
vectors. L = 1 ft and ! AB• =Determine ec in your analysis. of links BD and DE. Write your answers as vectors.
"4 rad / s the angular velocities E 2L ! AB
L 2L A
B D Use the following parameters in your analysis: L = 1 ft and ωAB = 8 rad/s. Chapter II: Planar Rigid Body Kinematics Homework II29 Planar Kinematics Homework Problems
Homework 2.B.2 ME 274 Given: The mechanism shown below is made up of links AB, BE and CE. Links AB and CE are
Problem II24
pinned to ground at pins A and C, respectively. Link BE is pinned to links AB and CE at pins B
Given:
The mechanism shown below is made up of links AB, BE and CE. Links AB
and E, respectively. Link AB is rotating CCW at a constant rate of ωAB . In the position shown
and CE are pinned to ground at pins A and C, respectively. Link BE is pinned
link AB is horizontal, and link CE is vertical. to links AB and CE at pins B and E, respectively. Link AB is rotating CCW at
a constant rate of 4 rad/sec. In the position shown link AB is horizontal, and
Find: For this position, determine the angular velocity for links BE and CE.
link CE is vertical.
E L
d
!AB
r
A B C Use the following parameters in your analysis: r = 0.2 ft, L = 0.5 ft, d = 0.4 ft and ωAB = 4 rad/s. Find: For the position shown above:
a) Find the angular velocity for links BE and CE. b) Find the angular acceleration for links BE and CE. Write your final answers as vectors. Planar Kinematics Homework Problems ME 274 Chapter II: Planar Rigid Body Kinematics Homework II37 Problem II25
Homework 2.C.1
Given: A mechanism is made up of two links AB and BC pinned together at
point B, and with link AB pinned to ground at point A. Link BC is
Given: inned to a block that upconstrained ABmoveBC pinned together at point B, and with
p A mechanism is made is of two links to and on a horizontal plane. At
link ABhe instant ground at pointvertical, BC ispoint Cto a b...
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 Fall '09
 Acceleration, Velocity, planar rigid body, Rigid Body Kinematics

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