The property of a material which opposes the change in shape,volume,or length is called

State Hooke's law.

$A$ composite heavy rope made of two materials is suspended vertically from a high ceiling. The ratios of different quantities for the upper rope to the lower rope are: length $\frac{L_u}{L_l} = \frac{1}{2}$,cross-sectional area $\frac{A_u}{A_l} = \frac{2}{1}$,and density $\frac{d_u}{d_l} = \frac{2}{3}$. What is the ratio of the maximum stress in the two ropes?

Shearing stress causes change in

Explain longitudinal stress.

Why do spring balances show wrong readings of weight after they have been used for a long time?