# Class Notes for PHYS201 at University of Delaware (UD)

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## PHYS201 Lecture Notes - Lecture 12: Net Force, Acceleration

1

Its value depends on the choice of a rotational axis. Torque, , is the tendency of a force to rotate an object about some axis. There is no unique valu

View Document## PHYS201 Lecture 1: Physics 201

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Concerned with the fundamental principles of the universe. Classical physics before 1900 and modern from 1900 on. Theory and experiments should complem

View Document## PHYS201 Lecture Notes - Lecture 9: Conservative Force, Mechanical Energy, Gravitational Energy

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The work it does is stored in the form of energy that can be released at a later time. Work done cannot be recovered later as kinetic energy; instead,

View Document## PHYS201 Lecture Notes - Lecture 8: Centripetal Force, Friction, Circular Motion

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To slide one such surface across another requires a force larger enough to overcome the resistance of microscopic hills and valley bumping together. Th

View Document## PHYS201 Lecture 13: Gravity

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Newton was not the first to discover gravity. Legend newton, sitting under an apple tree, realized that the force causing an apple to accelerate downwa

View Document## PHYS201 Lecture Notes - Lecture 5: Polarization Density, Quantum Field Theory

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A mathematical quantity with both a magnitude and a direction. Scalar quantities: length, area, volume, speed, mass, density, temperature, energy, work

View Document## PHYS201 Lecture Notes - Lecture 11: Acceleration, Angular Acceleration, Speed

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Radian: a radian is the angle for which the arc length on a circle of radius r is equal to the radius of the circle, whenever using rotational equation

View Document## PHYS201 Lecture Notes - Lecture 2: Abbreviation, Significant Figures, Vigesimal

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The most widely used numerical system is decimal or base 10. The duodecimal base 12: egyptians divide the interval between sunrise and sunset into 12 p

View Document## PHYS201 Lecture Notes - Lecture 10: Net Force, Inelastic Collision, Elastic Collision

1

Product if mass and velocity of an object. The total momentum of a system of objects is the vector sum of the momenta of all the objects. The net force

View Document## PHYS201 Lecture Notes - Lecture 6: Unit Vector

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Two ways to add vectors: graphically. Tip to tail or head to tail. The resultant is drawn from the origin of the first vector to the end of the last ve

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