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Conversion of potential energy to kinetic energy

Runout of a large landslide. Consider a landslide mass that fails from an elevation of 2500 m. The valley floor onto which the rockmass tumbles lies at 1700 m. The mass comes to a screeching halt on the opposite valley wall at an elevation of 1950 m.

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Conversion of potential energy to kinetic energy

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  1. Runout of a large landslide. Consider a landslide mass that fails from an elevation of 2500 m. The valley floor onto which the rockmass tumbles lies at 1700 m. The mass comes to a screeching halt on the opposite valley wall at an elevation of 1950 m. Calculate the maximum and minimum speed at which the mass is traveling as it crosses the valley floor. Given these estimates, estimate how much time a citizen of the valley floor would have to get out of the path of the slide if they were fortunate enough to have witnessed its initiation. Conversion of potential energy to kinetic energy Mechanical Work = Change in Energy Units of force (lb or Newton times distance) = kg x m2/s2 PE = KE

  2. Mass wasting features • Brook, question 7.1, King Hill, ID • 7.1a • What type of mass movement occurred and how did it happen? • Did debris reach King Cr? If so, where? Give coordinates. • 7.1c • Three well-defined slump blocks are visible in the middle photo. Give their grid coordinates. rotational block slump yes, at A.0-3.0 to A.4-3.4 C.9-2.1 or E.0-2.1

  3. Brook, question 7.2, Slumgullion, CO • 7.2a • What kind of mass movement occurred? • 7.2b • What relationship is there between the moved material and Lake San Cristobal? earthflow (more soil than rock/soil mix) earthflow dammed the river creating Lake San Cristobal

  4. Mass wasting features • Brook, question 7.3, Sundog Basin, Canada • What type of mass movement has occurred in the unconsolidated sands (D.1-2.0)? • What could have triggered it? rotational soil slump erosion of the slope toe by the river reduced support at toe and weight of overlaying material triggered failure

  5. Gladstone, Oregon

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