20 J work is required to stretch a spring through 0.1 m . Find the force constant of the spring. If the spring is further stretched through 0.1 m. Calculate work done.

A mass of 1kg is hanged through a spring. The spring is stretched through 1cm. What is the energy stared in spring?

A force of 1N is required to stretch a spring by 1.5cm. If the spring is cut into three equal parts, find the force required to stretch one part by 3 cm.

Consider a block connected to a light spring of spring constant 100Nm^(-1) . Now the block is displaced by applying a constant force F which gives zero resultant force when spring is stretched through 10 cm. Evaluate (i) Work done by the spring force when the block attains equilibrium. (ii) Net work done on the block when it attains maximum speed.

In the two block spring system, force constant of spring is k = 6N/m. Spring is stretched by 12 cm and then left. Match the following.

A spring of spring constasnt 50 N/m is compressed from its natural position through 1 cm. Find the work done by the work done by the spring force on the agency compressing the spring.

The work done in extending a spring by x_0 is W_0 . Find the work done in further extension x_0 .

A spring with spring constant k is extended from x=0 to x=x_(1) . The work done will be