Jawabanmu

2014-03-23T13:02:08+07:00
K = EA/L... dirangkai seri maka ktotal = (k1.k2)/(k1+k2).. untk k1 = kwat K = 4/2 = 2.. kita hnya pke prbandingan.. jdi A = d^2 = 4 dan L = 2... mkanya 4/2 = 2.. sdangkan k2 = kawat L = 1.. shg ktotal = 2.1/(2+1) = 2/3.. hukum hooke F = k.delta x -> delta x = F/k = mg/k = 100/(2/3) = 150.. untk satuan tdk tw.. krn E tidak diketahui..