PHYS 6A Lecture 14: PHYS - Lecture 14
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Chapters 4-7 on 2nd midterm, but also concepts from chapters 1-3. If spring is not stretched and stretched - no potential energy. Think about it in the equation - deltax is squared. Hooke"s law: the more you stretch the spring, the more work you. Iclicker (similar question on exam) have to do. Conservation of energy, look at initial state and then count the energy. Energy was lost because the friction was doing the work on the system. Spring has a constant of k=10n/m and is compressed 5cm. Once released the object moves up a frictionless ramp. How far up the ramp does the object move. Well defined initial and final position connect to potential energy of final. As the object was rolling down the hill it was exerting a force. Initially the velocity of all objects are 0, then measure the velocity of the object.
