Saved Bookmarks
| 1. |
The adjacent graph shows the extra extension (Deltax) of a wire of length 1m suspended from the top of a roof at one end with an extera load Deltaw connected to the other end If the cross sectional area of the wire is 10^(-5)m^(2) calculate the Young's modulus of the meterial of the wire (A) 2 xx 10^(11) N//m^(2) (B) 2 xx 10^(-11)N//m^(2) (c) 3 xx 10^913) N//m^(3) (D) 2 xx 10^(16)N//m^(2) . |
|
Answer» SOLUTION :`DELTAL=((l_0)/(AY))Deltawslope=(l_(0))/(AY)=(1xx10^(-4))/(20)rArr(1)/((10^(-6))Y)=(1xx10^(-4))/(20)` `Y = 20 xx 10^(10) = 2 xx 10^(11) N//m^(2)` . |
|