1. Physics 111: Elementary Mechanics – Lecture 6 Carsten Denker NJIT Physics Department Center for Solar–Terrestrial Research

2. October 10, 2006Center for Solar-Terrestrial Research Energy and Work Kinetic energy Work done by a constant force Work–kinetic energy theorem

3. October 10, 2006Center for Solar-Terrestrial Research Work Done by a Gravitational Force Work done by gravitational force Change in kinetic energy Tomato thrown upward Lifting/lowering an object

4. October 10, 2006Center for Solar-Terrestrial Research Work Done by a Spring Force Hooke’s law Work done by a spring force

5. October 10, 2006Center for Solar-Terrestrial Research Work Done by a General Variable Force  Calculus  Divide area under curve  Add increments of W (numerically)  Analytical form?  Integration!!! Work: variable force