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t pinned to shown, AB is A. Link and pinned is moving to is constrained to move on
2
a horizontal a speed of 10 instant shown, AB is vertical,at a rate ofC is moving to the right with
with plane. At the m/sec and slowing down and point 3 m/sec .
a speed of vC with this speed changing at a rate of vC .
˙ Find: At the instant shown,
a) determine the angular velocity of links AB and BC. Write your
answers as vectors.
• Determine the angular velocity of links AB and BC. Write your answers as vectors.
b) determine the angular acceleration of links AB and BC. Write your
• Determine the angular acceleration of links AB and BC. Write your answers as vectors.
answers as vectors. Find: For this position: B
L
r A C vC Use the following parameters in your analysis: r = 1 m, L = 2 m, vC = 10 m/s and vC = 3 m/s2 .
˙
You may solve the problem using the Method of Instant Centers and/or by adopting a vector
approach. Planar Kinematics Homework Problems ME 274 Problem II26
GI38 : A mechanism is made up of links AB and BC and a wheel pinned to Homework
iven
I
Chapter II: Planar Rigid Body Kinematics
BC at the wheel’s center C. The wheel rolls without slipping on a
horizontal surface. Link AB rotates counterclockwise with a constant
rate of 3
Homework 2.C.2 rad/sec. At the instant shown, link AB is vertical.
Find:
Given: AAt the instant made up of links AB and BC and a wheel pinned to BC at the wheel’s
mechanism is shown,
center C. Theawheel rolls without angular on a horizontal surface. Link AB rotates counterclockwise
) determine the slipping velocities of link BC and the wheel.
with a constant rate of ωAB . At the instant shown, link AB is vertical.
b) determine the angular accelerations of link BC and the wheel.
c) determine the velocity and acceleration of point E on the perimeter
Find: For this position:
of the wheel (at the instant shown, E is on the same horizontal • Determine lineangular velocity of link BC and the wheel. Write your answers as vectors.
the as C).
• Determine the angular acceleration of link BC and the wheel. Write your answers as vectors. Write your answers as vectors. B
r d
!AB E
no slip L A
C Use the following parameters in your analysis: r = 0.5 m, L = 2 m, d = 1 m and ωAB = 3 rad/s.
You may solve the problem using the Method of Instant Centers and/or by adopting a vector
approach....
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This document was uploaded on 02/18/2014.
 Fall '09

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