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Climbing, slipping and Newton's second law

Michael J O'Shea

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A point mass model of a climber ascending a rock slope is developed. Stability of the climber is defined via the maximum possible friction force exerted by the feet of the climber on rock and the maximum possible force that the hands of the climber can support in a handhold. This model is then generalized to a somewhat more realistic extended mass model. A climber on a vertical rock wall or under a rock roof is examined within this extended mass model and positions of climber stability are found.


PACS

01.40.-d Education

Subjects

Education and communication

Dates

Issue 6 (November 2009)

Received 31 July 2009, in final form 1 August 2009



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