subject
Engineering, 11.12.2019 03:31 campbellkruger

Aperson is planning a bungee jump from a 40 meter high bridge. under the bridge is a river with crocodiles, so the person does not want to be submerged into the water. the rubber rope fastened to the ankles has a spring constant of 3,600 n/m per meter length. thus one meter length of rope will have a spring constant of 3,600 n/m, two meters of rope will have a spring constant of 1,800 n/m, three meters of rope will have a spring constant of 1,200 n/m and so forth. the distance from the ankles to the top of the head is 175 cm, and the person has a mass of 80 kg. calculate: a. b. c. how long the rope should be [m] how much deflection the rope experiences [m] how much impact force the bungee jumper experiences [n]

ansver
Answers: 2

Another question on Engineering

question
Engineering, 03.07.2019 14:10
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
question
Engineering, 04.07.2019 18:10
Air is to be cooled in the evaporator section of a refrigerator by passing it over a bank of 0.8-cm-outer-diameter and 0.4-m-long tubes inside which the refrigerant is evaporating at -20°c. air approaches the tube bank in the normal direction at 0°c and 1 atm with a mean velocity of 4 m/s. the tubes are arranged in-line with longitudinal and transverse pitches of sl- st 1.5 cm. there are 30 rows in the flow direction with 15 tubes in each row. determine (a) the refrigeration capacity of this system and (b) pressure drop across the tube bank. evaluate the air properties at an assumed mean temperature of -5°c and 1 atm. is this a good assumption?
Answers: 1
question
Engineering, 04.07.2019 18:10
Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.
Answers: 3
question
Engineering, 04.07.2019 18:20
Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 °c. sutherland constant for air is 111k
Answers: 3
You know the right answer?
Aperson is planning a bungee jump from a 40 meter high bridge. under the bridge is a river with croc...
Questions
question
Mathematics, 14.05.2020 19:57
question
Mathematics, 14.05.2020 20:57
Questions on the website: 13722363