Lecture 5 -Work-Energy Theorem and Law of Conservation of Energy
Overview:
The lecture begins with a review of the loop-the-loop problem. Professor Shankar then reviews basic terminology in relation to work, kinetic energy and potential energy. He then goes on to define the Work-Energy Theorem. Finally, the Law of Conservation of Energy is discussed and demonstrated with specific examples.
Reading assignment:
Wolfson and Pasachoff, Physics with Modern Physics, chapter 7.
Lecture 4 - Newton's Laws (cont.) and Inclined Planes
Overview:
The lecture begins with the application of Newton's three laws, with the warning that they are not valid for objects that move at speeds comparable to the speed of light or objects that are incredibly small and of the atomic scale. Friction and static friction are discussed. The dreaded inclined plane is dealt with head on. Finally, Professor Shankar explains the motion of objects using Newton's laws in specific problems related to objects in circular motion, such as roller coasters and a planet orbiting the Sun.
Reading assignment:
Wolfson and Pasachoff, Physics with Modern Physics, chapter 6.
This lecture introduces Newton's Laws of Motion. The First Law on inertia states that every object will remain in a state of rest or uniform motion in a straight line unless acted upon by an external force. The Second Law (F = ma) relates the cause (the force F) to the acceleration. Several different forces are discussed in the context of this law. The lecture ends with the Third Law which states that action and reaction are equal and opposite.
Reading assignment:
Wolfson and Pasachoff, Physics with Modern Physics, chapter 5.
In this lecture, Professor Shankar discusses motion in more than one dimension. Vectors are introduced and discussed in multiple dimensions. Vector magnitude and direction are also explained. Null vectors, minus vectors, unit and velocity vectors are discussed along with their properties. Finally, several specific problems are solved to demonstrate how vectors can be added, and problems of projectile motion are expounded.
Reading assignment:
Wolfson and Pasachoff, Physics with Modern Physics, chapter 4.
Lecture 1 - Course Introduction and Newtonian Mechanics
Overview:
Professor Shankar introduces the course and answers student questions about the material and the requirements. He gives an overview of Newtonian mechanics and explains its two components: kinematics and dynamics. He then reviews basic concepts in calculus through two key equations: x = x0 + v0t + ½ at2 and v2 = v02+ 2 a (x-x0), tracing the fate of a particle in one dimension along the x-axis.
Reading assignment:
Wolfson and Pasachoff, Physics with Modern Physics, chapters 1-3.
CLICK HERE to download JPTEO, Vol. 2, No. 4, May 2005.
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Implementing inquiry-based instruction in the science classroom: A new model for solving the improvement-of-practice problem Carl J. Wenning
Examining the professional growth of out-of-field physics teachers: Findings from a pilot study Joseph Taylor, Janet Carlson Powell, Kim Bess, & Theodore Lamb
High school physics students' conceptions of position, velocity, and acceleration during a computer-based unit on kinematics David A. Slykhuis & John C. Park