The property of matter by virtue of which it does not regain its original shape and size after the removal of deforming force is called

The property of a body by virtue of which it tends to regain its original conifguration as soon as the deforming forces applied on the body are removed is called elasticity. Coefficient of elasticity, E = (stress)/("strain") = (F//a)/(Delta l//l) = (F l)/(pi r^2(Delta l)) The value of E depends upon nature of meterial. A meterial with higher value of E is said to be more elastic. Read the above passage and answer the following question : (i) Which is more elastic steel or rubber ? Why ? (ii) What values of life so you learn from this concept ?

The delay in recovery on removal of the deforming force is called ___

The property of a body by virtue of which it changes its dimensions permanently is called

COMPLETION TYPE QUESTIONS The delay on the part of the body in regaining its original configuration on removal of the deforming force is called the _________.

The temperature below which a gas does not exist is called its

The nature of elastic forces by virtue of which a body possess the property of elasticity is

Two blocks of mass m_(1) and m_(2) are moving along a smooth horizontal floor. A non-ideal spring is attached at the back of mass m_(2) . Initial velocities of the blocks are u_(1) and u_(2) as shown, with u_(1) gt u_(2) . After collision the two blocks were found to be moving with velocities V_(1) and V_(2) respectively. Find the ratio of impulse (on each block) during the deformation phase of the spring and that during its restoration phase. [By non ideal spring we mean that it does not completely regain its original shape after deformation. You can neglect the mass of the spring.]

Assertion Upto the elastic limit, strain prop stress. Reason Upto elastic limit, material returns to its original shape and size, when external force is removed.