Phys 115-002 Lecture 1 Outline of Current Lecture I. Review of course structureII. Overview of physics topics to be covered, with their biological applicationsIII. Review of Newtonian mechanics: forcesIV. Review of energy (mostly mechanical)Current Lecture- Course Structureo Warm ups due Sunday at 6pmo HW due Wednesdays- Overviewo Fluidso Electric energyo Magneticso Opticso Quantum physics- Forces Reviewo Newton’s Laws 1. Under the conditions of zero net force, an object will move with constant speed (which could be zero). 2. When a net force is applied to an object or system, that object or system accelerates with a magnitude Fnet/m, where m represents the mass of the system or object. 3. All forces come in pairs. When object A exerts a force on object B, object B exerts a force on A of equal magnitude and opposite in direction.o How many vertical forces are on link 3? Three forces: N23, N43, W All links except 4 have two contact and one weight force. Rank the forces:- All the forces on 4 are equal because they are at rest.These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- N34 and N43 are equal because of 3rd Law.- N34 = W4 = N43 = W3 < N23o Accelerationo Work W = Fdcos(theta) K = ½ mv2 Ugrav = mgy Uspring = ½ kx2 E = K + U- Forceso Opposite to vector = negativeo Perpendicular to vector =
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