Lab report Essay Example | Topics and Well Written Essays - 750 words - 5

Lab report - Essay Example In this case, a stationary body can obtain kinetic energy from a moving. On the contrary, potential energy is totally not transferable to other body, but it can be converted to kinetic energy. Potential energy is directly connected with forces. If the work done on a body by a force that moves from point A to B is independent of the path between the two points, then the work done by this force is assigns a scalar value on each point in space and referred to as a scalar potential field. This means that the integral equation drawn from the line representing the change of force between these two points can be defined as the negative of the vector gradient and it gives the potential field. This potential field is the equivalent of the change in potential energy between the two points. This explains why the spring’s potential energy is given as a negative value. The negative sign denotes the convection that work done by a force field increase the PE while work applied against the force field reduces the potential energy It is important to note that work is required to either reduce or increase the potential energy of a body. In this case, a change in potential energy principally reflects the work done on the object. Therefore, the integral derivative of a PE function will give the amount of work done. Again the value is given as a negative figure to denote that the work done has reduced the PE possession of the body. 1. A normal pendulum with a few modifications can be used to achieve similar objectives. In this case, a zero position for the pendulum is identified. Since many labs are done on tabletops, the table top is assigned to be the zero height (mean) position. If the tabletop is designated the zero position, then the PE of an object is dependent on its relative height from the tabletop. Therefore, by obtaining the mass of the pendulum and its relative height from the table top, the gravitational