A moving block of mass m=6.38kg collides with a horizontal spring whose spring constant is k=201 N/m. The block compresses the spring a maximum distance of x=2.35 cm from its rest position. The coefficient of kinetic friction between the block and the horizontal surface is μ=0.460.  1.What is the work (in joules) done by the spring in bringing the block to rest?  2. How much mechanical energy (in joules) is dissipated by the force of friction while the block is being brought to rest by the spring?   3. What is the speed of the block when it hits the spring? Answer in m/s.

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Spring Potential Energy

The potential energy is the energy possessed by a body by virtue of its position or the energy held by the object due to its position relative to other objects, its force like stresses, charge, and other factors affecting the particles of the body. The potential energy is the measure of the net work done by or on the body. The spring potential energy is the potential energy stored due to the deformation of an elastic spring and this elasticity is due to the stretched spring. The elasticity is the ability of a solid-state matter to come back to its equilibrium position or original position after any kind of external force is acted on it. It is also known as Elastic potential energy. The potential energy here is caused due to the displacement of the spring from its equilibrium position to another position and this potential energy is equal to the net work done due to the stretching of the spring. It also resembles the same mechanics of the oscillation of a simple pendulum, where due to the external force, the object moves from its equilibrium position to its maximum ends and the periodic motion continues till it comes back to the equilibrium position to rest.