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You try to climb a rope hanging from the ceiling by pulling on itwith a force F

ID: 1670695 • Letter: Y

Question

You try to climb a rope hanging from the ceiling by pulling on itwith a force F that exceeds your weight. According to Newton's 3rdlaw, the rope pulls back with a force F in the opposite direction.Since the vector sum of the two forces is zero, how is it possiblefor you to climb?
A.) Although these two forces cancel each other out, theceiling pulls the rope with the same force, which is thentransmitted to you. B.) The friction between your hands and the rope supplies anadditional force, so that the overall force is actually zero. C.) The two forces act on different objects and only therope's reaction acts on you. D.) The rope stretches momentarily. The elastic energy itstores is then returned to you when you reach with your other hand,supplying the gravitational potential energy necessary for theclimb.
A.) Although these two forces cancel each other out, theceiling pulls the rope with the same force, which is thentransmitted to you. B.) The friction between your hands and the rope supplies anadditional force, so that the overall force is actually zero. C.) The two forces act on different objects and only therope's reaction acts on you. D.) The rope stretches momentarily. The elastic energy itstores is then returned to you when you reach with your other hand,supplying the gravitational potential energy necessary for theclimb.

Explanation / Answer

C.) The two forces act on different objects andonly the rope's reaction acts on you.

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