Post on 23-Jun-2018
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Example
A 40kg 5m long beam is supported (not attached) to the two posts in the figure. A 20kg boy starts walking along the beam. How close can he get to the right end of the beam without it falling over?
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Rolling without slipping
When the wheel makes one full rotation it travels a distance equal to the circumference:
Where T is the time for one revolution.
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Note: The bottom of the wheel is instantaneously at rest. The top of the wheel is moving with twice the translational velocity.
The point of contact is the pivot point but the wheel rotates about the center.