Răspunsuri

2014-03-06T17:09:30+02:00
L-lo/lo=1/E . F/S
1,5/50=1/E . 800/0.06 => 1/E =0.03/1333.3 1/E =399.9 ~ 400 => E =1/400 =0.0025

d= 9 mm = 0,09 m. S = piR^2 =3.14 x (0.045) ^2=0.06 m^2

De unde stii ca S=0,06?
d= 9 mm = 0,09 m. S = piR^2 =3.14 x (0.045) ^2=0.06 m^2