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B49 Explain the terms tensile stress and teale strain as applied Lo a specimen of material and explain the meaning of the word tensile. A car breaks down and the driver asks a lieal to tow it using a piece of nylon rope whils 10.00 m long and has a diameter of 10.m The rope obeys Hooke's law and has a Ynmg modulus of 3.0 x 10°Nm. The mass of the car and driver is 750 kg. (a) When towing on a level road at a cunntant speed, it is found chat the rope cstenth by 0.025 m. Calculate the tension in ilepe and hence the net resistive force aclug the towed cur. (b) The two cars now ascend a slope whul rises 1.0m vertically for every 1'5m travelled on the road. They maintan the same speed as in part (a). What is the new length of the towrope? (c) How much clastic energy is stored in ihe rope while the cars are climbing? (d) A stretched towrope must be regarded aN

B49 Explain the terms tensile stress and teale strain as applied Lo a specimen of material and explain the meaning of the word tensile. A car breaks down and the driver asks a lieal to tow it using a piece of nylon rope whils 10.00 m long and has a diameter of 10.m The rope obeys Hooke's law and has a Ynmg modulus of 3.0 x 10°Nm. The mass of the car and driver is 750 kg. (a) When towing on a level road at a cunntant speed, it is found chat the rope cstenth by 0.025 m. Calculate the tension in ilepe and hence the net resistive force aclug the towed cur. (b) The two cars now ascend a slope whul rises 1.0m vertically for every 1'5m travelled on the road. They maintan the same speed as in part (a). What is the new length of the towrope? (c) How much clastic energy is stored in ihe rope while the cars are climbing? (d) A stretched towrope must be regarded aN

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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B49 Explain the terms tensile stress and temale strain as applied to a specimen of material and explain the meaning of the word tensile. A car breaks down and the driver asks a liel to tow it using a piece of nylon rope whi ls 10.00 m long and has a diameter of 10.m The rope obeys Hooke's law and has a Ynmg modulus of 3.0 x 10°Nm. The mass ol the car and driver is 750 kg. (a) When towing on a level road ata cuntant speed, it is found chat the rope cstenth by 0.025 m. Calculate the tension in ilepe and hence the net resistive force aclug the towed cur. (b) The two cars now ascend a slope wlii rises 1.0m vertically for every 1'5m travelled on the road. They maintan the same speed as in part (a). What is the new length of the towrope? (c) How much clastic energy is stored in Ihe rope while the cars are climbing? (d) A stretched towrope must be regarded av dangerous because of the energy released should it break or become detacliedl. T'lirs danger can be reduced by careful cloe of towrope. By comparison with the original epe n each case, state and explain lw the energy stored in the rope kl be reduced by using a rope with a all (1) Young modulus, (ii) area of cross-seution "|
Transcribed Image Text:B49 Explain the terms tensile stress and temale strain as applied to a specimen of material and explain the meaning of the word tensile. A car breaks down and the driver asks a liel to tow it using a piece of nylon rope whi ls 10.00 m long and has a diameter of 10.m The rope obeys Hooke's law and has a Ynmg modulus of 3.0 x 10°Nm. The mass ol the car and driver is 750 kg. (a) When towing on a level road ata cuntant speed, it is found chat the rope cstenth by 0.025 m. Calculate the tension in ilepe and hence the net resistive force aclug the towed cur. (b) The two cars now ascend a slope wlii rises 1.0m vertically for every 1'5m travelled on the road. They maintan the same speed as in part (a). What is the new length of the towrope? (c) How much clastic energy is stored in Ihe rope while the cars are climbing? (d) A stretched towrope must be regarded av dangerous because of the energy released should it break or become detacliedl. T'lirs danger can be reduced by careful cloe of towrope. By comparison with the original epe n each case, state and explain lw the energy stored in the rope kl be reduced by using a rope with a all (1) Young modulus, (ii) area of cross-seution "|
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