Slippery Slope

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Slippery Slope The film Touching the Void tells the true story of Joe Simpson and Simon Yates and their 1985 attempt to scale Siula Grande. While successful with the ascent, the steep descent they attempted got them in serious trouble. Simpson falls and breaks his leg part-way down the mountain, and Yates attempts to lower him down a particularly dangerous slope by means of a rope since he cannot walk. The slope is inclined at źŴ to the horizontal, and the coefficient of friction between Joe Simpson and the snowfield is ŴŻ. Joe is being held in equilibrium by a rope at an angle of Ź from the slope. Draw a force diagram to show all forces acting on Joe. Assuming Joe (and his kit) weighs ŵŴŴ˫˧ , find the minimum tension in the rope. What is the largest tension that could be applied to the rope? Slippery Slope Solutions The film Touching the Void tells the true story of Joe Simpson and Simon Yates and their 1985 attempt to scale Siula Grande. While successful with the ascent, the steep descent they attempted got them in serious trouble. Simpson falls and breaks his leg part-way down the mountain, and Yates attempts to lower him down a particularly dangerous slope by means of a rope since he cannot walk. The slope is inclined at źŴ to the horizontal, and the coefficient of friction between Joe Simpson and the snowfield is ŴŻ. Joe is being held in equilibrium by a rope at an angle of Ź from the slope. Draw a force diagram to show all forces acting on Joe: Assuming Joe (and his kit) weighs ŵŴŴ ˫˧ , find the minimum tension in the ro pe. Minimum tension occurs when friction is at maximum: ˘ ŴŻ˞ Resolving parallel to the slope: ˘ -ˠU[_Ź ŵŴŴ˧_ZźŴ ŹŴ˧ŷ ŴŻ˞ - ˠU[_Ź ŹŴ˧ŷ Resolving perpendicular to the slope: ˞-ˠ_ZŹ ŵŴŴ˧U[_źŴ ŹŴ˧ '" %!" =$G ' Solving simultaneously: ˞ ŹŴ ˧ . ˠ _Z Ź ˤ ˞ "& ŴŻ'ŹŴ˧ . ˠ _Z Ź( ŹŴ˧ŷ .ˠU[_Ź ŷŹ˧ .ŴŻˠ_ZŹ ŹŴ˧ŷ . ˠ U[_ Ź )ŹŴ ŷ . ŷŹ *˧ ˠ'U[_Ź.ŴŻ_ZŹ( )ŹŴŷ . ŷŹ *˧ ˠ +,-./Ϳ1΃ 3 U[_Ź. ŴŻ_ZŹ What is the largest tension that could be applied to the rope? At maximum tension, friction will be maximum, but acting down the slope: ˘ ŴŻ˞ Resolving parallel to the slope: ˠU[_Ź ŵŴŴ˧_ZźŴ-˘ ŹŴ ŷ˧ - ŴŻ˞ Resolving perpendicular to the slope: ˞-ˠ_ZŹ ŵŴŴ˧U[_źŴ ŹŴ˧ " =$G '!'" % Solving simultaneously: ˞ ŹŴ˧ . ˠ_ZŹˤ˞ "& ˠ U[_ Ź . ŹŴ ŷ˧ ŹŴ ˧ . ˠ _Z Ź ŴŻ'ŹŴ ˧ . ˠ _Z Ź( ˠ U[_ Ź . ŹŴ ŷ˧ ŴŻ ŷŹ˧.ŴŻˠ_ZŹ ˠU[_Ź.ŹŴŷ˧ )ŹŴ ŷ - ŷŹ *˧ ˠ'U[_Ź-ŴŻ_ZŹ( )ŹŴŷ - ŷŹ *˧ ˠ --14./Ϳ1΃ 3 U[_Ź-ŴŻ_ZŹ.

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Touching the Void Discussion Guide
www.influencefilmclub.com Touching the Void Discussion Guide Director: Kevin Macdonald Year: 2003 Time: 106 min You might know this director from: Black Sea (2014) How I Live Now (2013) Marley (2012) The Eagle (2011) Life in a Day (2011) State of Play (2009) My Enemy’s Enemy (2007) The Last King of Scotland (2006) One Day in September (1999) FILM SUMMARY When Joe Simpson published “Touching the Void,” the wildly popular account of his near-death experience on the Siula Grande mountain in the Peruvian Andes, the film rights to the book became a hot commodity. Yet, translating this tale onto the silver screen was a difficult task, one that Academy Award-winning director Kevin Macdonald thought was best suited for the documentary format. “I’m a purist,” Macdonald says. “I don’t like casually blurring the lines of documentary and drama.” So, he stays true to the memoir in his filmic adaptation. Using studio interviews and reenactments, Macdonald tells the thrilling story of Simpson’s climb, bringing us to the top of that treacherous mountain and down again. There was a reason that the West Face of the Siula Grande had never been ascended. It is perilous and menacing at its best. The majority of people would laugh at the prospect, which is exactly the reason Simpson and Yates set out for its peak. Confident young men full of athletic prowess, they alpined to the top, took the victorious photographs, and quickly set out to get back down, all while racing against a ticking clock. The biggest challenge of the journey unexpectedly proved to be the descent.
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Book Reviews 1988 COMPILED by GEOFFREY TEMPLEMAN
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Touching the Void: Intermediate Level Free
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Touching the Void Points for Understanding Answer
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I Lolled on the Rope, Scarcely Able to Hold My Head Up. an Awful Weariness Washed Through Me, and with It a Fervent Hope That This Endless Hanging Would Soon Be Over
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