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MECHANICS OFMACHINES (ME3112)
TUTORIAL 1-2SHAHrokh
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Before starting Next assignment: Q5
The box outside Dynamics lab (E1-02-03)
Next week (7 days from now)
Name, group no., date and time of tutorial class
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Kinematics of rigid body (summary) Translation
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Kinematics of rigid body (summary) Rotation
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Kinematics of rigid body (summary) General motion = translation + rotation
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Relative motionKinematics of rigid body (summary)
How do you convert velocity/acceleration in one frame to the other frame?
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Relative motion: (rotating frame formulation)
Needs two different frames
Each frame needs one coordinate system The rotating frame has angular velocity and acceleration with respect to
the fixed frame
Kinematics of rigid body (summary) No relative motion: (2-point formula)
No relative motion between any two points on each rigid body
One frame and one coordinate system
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Problem 1
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Problem 1
2-point formula
Disk
Rod
y
x
=+ /
=+ /
0 = /= 0 + /
x direction:
y direction:
For =0
=15 / = /
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Problem 2
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Problem 2
2-point formula
Disk
Rod
y
x
=+ /+ /
0 = 0
/
=
+
x direction:
y direction:
For =0 =+ /+ /
=15 / = /
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Problem 3
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Problem 3
Relative motion (rotating frame)
= + /+
= + /+ / + 2 +
Y
Xx
y
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Problem 4
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Problem 4
Two rotating frame
= + /+
= + /+ / + 2 +
= + /+
= + /+ / + 2 +
One rotating frame ???
x
y
zx
z
y
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ENDTHANK YOU
Q5 FOR NEXT WEEKSHAHrokh