explain why a rope climber must pull downward on the rope in order to move upward. discuss the force exerted by the climber's arms in relation to the weight of the climber during the various stages of each "step" up the rope.
2007-10-16 16:29:52 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Consider the mass of the climber to be m, the weight, therefore is m*g.
When the climber pulls down on the rope, he lightens his own weight by the difference between his weight and the downward force. Call the Force F.
now the apparent weight is m*g-F
I assume there is a pulley involved, which transfers the downward force to the rope tension when
F>m*g-F
or
F>m*g/2, the climber accelerates upward.
j
2007-10-19 10:50:25 · answer #1 · answered by odu83 7 · 0⤊ 0⤋
sophisticated subject. try searching with the search engines. that will will help!
2014-11-06 16:24:54 · answer #2 · answered by Anonymous · 0⤊ 0⤋