One end (say B) of a massless spring having force constant k is attached to a block lying on a smooth surface while the other end A is pulled by an external force At some instant the velocities of end A and B of the spring are `v_(A)` and `v_(B)` respectively. If the energy of the spring is increasing at the rate of `P J//s` find the instantaneous tension and stretch in the spring.

A block of mass M is placed on a smooth horizontal surface and it is pulled by a light spring as shown in the diagram. If the ends A and B of the spring are moving with 4ms^(-2) and 2ms^(-1) respectively and the rate at which spring energy is increasing is 20Js^(-1) . then what is the value of spring force (in N)?

A block of mass 2 kg is connect to an ideal spring and the system is placed on a smooth horizontal surface. The spring is pulled to move the block and at an instant the speed of end A of the spring and speed of the block were measured to be 6 m/s and 3 m/s respectively. At this moment the potential energy stored in the spring is increasing at a rate of 15 J/s. Find the acceleration of the block at this instant.

A block of mass M is placed on a smooth horizontal surface and it is pulled by a light spring as shown in the diagram. If the ends A and B of the spring are moving with 4 ms^(-1) and 2 ms^(-1) respectively and the rate at which spring energy is increasing is 20 Js^(-1) . then what is the value of spring force (in N)?

A block of mass 2 kg is connected to an ideal spring and is placed on a smooth horizontal surface. The spring is pulled to move the block and at an instant, the speed of end A of the spring and speed of the block were measured to be 6 m/s and 3 m/s, respectively. At this moment the potential energy stored in the spring in increasing at a rate 15 J/s. Find the acceleration of the block at this instant.

Two identical springs of force constant "k" are joined one at the end of the other (in series). Find the effective force constant of the combination.

Two massless springs of force constant K_(1) and K_(2) are joined end to end. The resultant force constant K of the system is

A spring of force constant K rests on a smooth floor, with one end fixed to a wall. A block of mass m hits the free end of the spring with velocity v. The maximum force exerted by the spring on the wall is