Two rock climbers, Bill and Karen, use safety ropes of similar length. Karen€™s rope is more elastic, called a dynamic rope by climbers Bill has a static rope, not recommended for safety purposes in pro climbing. Karen fall freely about 2.0m and then the rope stops her over a distance of 1.0m (Fig. 4-63).
(a) Estimate, assuming that the force is constant, how large a force she will feel from the rope. (Express the result in multiples of her weight.)
(b) In a similar fall. Bill€™s rope stretches by 30 cm only. How many times his weights will the rope pull on him? Which climber is more likely to be hurt?