Vertical Launch of a Grappling Hook

• Carl E. Mungan ^[1] ; Trevor C. Lipscombe ^[2]
  1. [1] Naval Academy

     Naval Academy

     Turquía

     
  2. [2] Catholic University of America

     Catholic University of America

     Estados Unidos

     
• Localización: The Physics Teacher, ISSN 0031-921X, Vol. 60, Nº. 5, 2022, págs. 327-330
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Problems involving chains, cables, or ropes that are dropped, folded, or pass around pulleys attract ongoing interest, in part because they can become variable-mass situations if the chain is partitioned into sections for analysis. Less attention has been paid to trying to intentionally project the end of a string as far as possible. Here we consider the launch of a grappling hook connected to a long flexible rope, such as the cartoon character Batman might do. As a real-life example of their use, rocket-propelled ropes with grapnels were employed to ascend French cliffs on D-Day, although the wetness of the lines made the task more difficult than expected. Line launchers have also been used to access the roofs of burning buildings.