Spring

There are two springs P and Q . Spring constant for P is K and that for Q is 3K . Both the springs are elongated by applying force of same magnitude . If U is energy stored in spring P then energy stores in spring Q is

The spring constant of spring A is twice the spring constant of spring B . Each of the spring is cut into two pieces. First piece of spring A is (4//5) of the total length. Second piece of spring B is (5//6) of its total length. Both springs are of equal lengh initially :

Two springs are in a series combination and are attached to a block of mass 'm' which is in equilibrium. The spring constants and extension in the springs are as shown in the figure. Then the force exerted by the spring on the block is :

A spring gun has a spring constant of 80Ncm^(-1) . The spring is compressed 12cm by a ball of mass 15g . How much is the potential energy of the spring ? If the trigger is pulled, what will be the velocity of ball ?

Two equal masses are attached to the two ends of a spring of spring constant k . The masses are pulled a part symmetrically to stretch the spring by a length x over its natural length. The work done by the spring on each mass is.