A spring with spring constaant k when compressed by 1 cm the PE stored is U. If it is further compressed by 3 cm, then change in its PE is

A spring with spring constant K when stretched through 1 cm , the potential energy is U . If it stretched by 4 cm , the potential energy will be

When a spring is compresssed by 3 cm the potential energy stored in it is U. When it is compressed further by 3cm, the increase in potential energy is

When a spring is stretched by 2 cm, it stores 100J of energy. If it is further stretched by 2 cm, the increase in energy is

When a spring is stretched by 2 cm, it stores 100J of energy. If it is further stretched by 2 cm, the increase in energy is

When a spring is compressed by a distance .x., the potential energy stored is U_(1) . When it is further compressed by a distance 2x, the increases in potential energy is U_(2) . The ratio of U_(1) : U_(2) is