Question

5 9 of 6 9 Tr #skas W: the , wala fined 4 FS sell Soplem the whole we Wo Flador Fogo the the nam Fragran wh.. slow the corne Pro-fus 14 2 The work reprenad iconwolde that the seg on the way that W - DE) • 54 - 671) of sokat the Epc) Wskor-s') Elf) - Eplay) then Eplxl- & kx² + c Eplay) - tku C meaning Epix) = kx the fashion but also Ep() 3 will work W = Ada Fulana (F)-F WE FOC). ()-Fan +(*-*)(****] = 4 **-4}(6) W-<')

is it correct?

Answer 1

Solstioni This given solution is not correct. The correct solution is given as - FA where- F- force FOXI). k- spring constant X, X The work done by small segment An. - FAR FN For Ax2) - FX) A PEX) AL F X X2 fis- AX - (x2-x)

from figure The whole work a W = Axi) AX & F(X2) AX from figure ③ The whole work Wz AIT AZ FX) Ax + ļax [fixo-FI I AX F42) 2 LAX AX FAI) W 2 2 (1241) F(X) + £ (42-41) FX1) wa 1 (2-41) [F62) + Ax] we know that F-kX where kis spring Constant Restoring force