When a small mass m is suspended at lower end of an elastic wire having upper end fixed with ceiling. There is loss in gravitational potential energy, let it it be x, due to extension of wire, mark the correct option...(see details)?
(1) The lost energy can be recovered
(2) The lost energy is irrecoverable
(3) Only #x/2# amount of energy is recoverable
(4) Only #x/3# of amount energy is recoverable
Why (3) is the correct option? It is an elastic wire. After removing load it will reach initial height. Lost energy is recovered.
(1) The lost energy can be recovered
(2) The lost energy is irrecoverable
(3) Only
(4) Only
Why (3) is the correct option? It is an elastic wire. After removing load it will reach initial height. Lost energy is recovered.
1 Answer
Oct 22, 2017
That seems very odd, like you say, the wire is defined as elastic.
Explanation:
The wire would be expected to return to its original dimensions in that case and all the energy should be converted back from strain energy into GPE. Odd.
