Solution Found!
An elastic cord is 65 cm long when a weight of 75 N hangs
Chapter 5, Problem 2P(choose chapter or problem)
QUESTION:
Problem 2P
An elastic cord is 65 cm long when a weight of 75 N hangs from it but is 85 cm long when a weight of 180 N hangs from it. What is the “spring” constant k of this elastic cord?
Questions & Answers
QUESTION:
Problem 2P
An elastic cord is 65 cm long when a weight of 75 N hangs from it but is 85 cm long when a weight of 180 N hangs from it. What is the “spring” constant k of this elastic cord?
ANSWER:
SolutionStep 1 a) First, we have to list out the variables provided. They are, The electrical energy as output, EElectrical0 J The efficiency of the device, = 60 % or 0.6 The chemical energy as input, E ChemicalHere, we have to find out the amount of chemical energy as input.