Question

The potential energy of a spring is the energy stored in it when it's stretched or compressed. It describes the work done to stretch the spring and depends on the spring constant k and the distance stretched. The potential energy of a spring is dependent on the stretch or squeeze of the spring, but not on the path taken.

Two forces of magnitudes 4 N and 8 N are acting on a box, when the box moves rightward across a frictionless horizontal support. The speed of the box at time t is 1m/s the change in kinetic energy of the box is

A force acts on a 30 gm particle in such a way that the position of the particle as a function of time is given by x = 3t − 4t² + t³, where x is in metres and t is in seconds. The work done during the first 4 seconds is

Two springs have their force constant as k₁ and k₂ (k₁ > k₂). When they are stretched by the same force