Pushing on the pump of a bottle of hand washing solution compresses a small spring which obeys hooke's law. if the potential energy of the spring is 0.0030 j when the spring is compressed 0.55 cm, determine the following.

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.