Problem sections

• Wednesday 3:30pm - 4:30pm Small 111 (Prof. Andrew Jackura)
• Thursday 8:30am - 9:20am Small 233 (Prof. Andrew Jackura)
• Thursday 1:00pm - 1:50pm Small 233 (Prof. Andrew Jackura)
• Thursday 3:30pm - 4:20pm Small 233 (Prof. Andrew Jackura)

additional help

• Physics department virtual help desk via zoom Wednesday 1-3pm, Thursday 1-3pm, Friday 9:30-11:30am.
• Society of Physics Students free tutoring: Thursday Small 122 6pm - 8pm.
• Tutoring is also available at Swem Library in the TutorZone for $15/hour.

Lecture 36: Standing wave. String musical instruments. Relationship between speed of sound, frequency, and wavelength

• notes as they were projected

Lecture 35: Wave equation. Traveling waves in ropes, speed of the wave. Boundary conditions.

• notes as they were projected

Lecture 34: Physical pendulum. Meaning of the variables. Solution for given initial conditions. Examples.

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Lecture 33: Solution for Harmonic oscillator equation and meaning of the labels. Simple pendulum and physical pendulum.

• notes as they were projected

Lecture 32: Problems involving Bernoulli equation. Introduction to harmonic oscillator

• notes as they were projected

Lecture 31: Remote study

Please watch complimentary video about resistive forces, i.e. drag and effects of viscosity. Even though in the lecture the motion of the spheres is discussed. You can think about pipes as “inverted” spheres, than you would see the connection to discussion of viscose flow in Ch14.7 of the text book. This is, by the way, your reading assignment.

By the way, I strongly recommend other lectures by Dr. Lewin.

Lecture 30: Gauge pressure, Bernoulli equation

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• Venturi tube

• Another venture tube

• Magnus effect should be described from drag point of view, even though Bernoulli equation idea gives the right answer too.

Lecture 29: Fluids and Buoyancy

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• Floating an anvil on liquid Mercury

Lecture 28: Fluids, Pascal principle, atmospheric pressure

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• Pascal’s barrel

• Benedict Cumberbatch water bottle demo

• Magdeburg hemispheres against modern horses

• Power breaks

Lecture 27: Fluids, hydrostatic

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• Lizard running on water when action is fast fluid has no time to move away and behave similar to solids.

• Incompressibility of water, the full video is super good lecture about fluids.

• Railroad tank crushing with air pressure

Lecture 26: Ultimate stress, why we build the way we build; Introduction to fluids

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Compression and Tension Strength of some common Materials

Building examples:

• Egyptian Pyramids
• Greeks Acropolis pillars
• Rome Archs, note horizontal beams inside
  • Flying buttress
• Truss
• Suspension bridge

Building mistake: Hyatt Regency walkway collapse

Lecture 25: Static equilibrium continued; stress and strain

• Projector malfunctioned see notes for lecture 25 from 2022 and notes for lecture 26 from 2022

• Michael Jackson gravity defying move

Lecture 24: Static equilibrium condition

• notes as they were projected

Lecture 23: Angular momentum conservation, gyroscopes precession

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• Anti-Gravity Wheel

• Dzhanibekov effect

Lecture 22: Angular momentum, torque, and their connection

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Lecture 21: Kinetic and Potential energy of a rigid body rotating relative to a fixed axle. Parallel axis theorem for moment of inertia. Intro to torque.

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Lecture 20: Kinetic energy of rotating rigid body, rolling: connection between angular and translational speed

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Lecture 19: Polar coordinates, tangential and radial velocity and acceleration, their connection to angular velocity and acceleration

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Lecture 18: 3D conservation of linear momentum: game of pool, ballistic pendulum; System of masses and its Center of Mass

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Lecture 17: 1D conservation of linear momentum: rockets, bouncing from a heavy object (wall), Galilean cannon with bouncing balls

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Lecture 16: Linear momentum, conservation of linear momentum, examples in 1D

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Lecture 15: Escape velocity, 1st and 2nd Kepler’s laws, tides

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Lecture 14: Motion around common center of mass, gravity from a spherical object and a spherical shell, orbital speed, gravitational potential energy

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Lecture 13: Universal law of gravity, acceleration due to gravity and its dependence on altitude, mass of Earth, Sun, and other objects; scale reading change on rotating masses

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Lecture 12: Power needed to move up hill, conservation of energy, sources of energy, calories

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Lecture 11: Conservative and non-conservative forces, energy conservation, and power

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Lecture 10: Definition of work, kinetic energy, gravitational potential energy

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Lecture 09: Pulley and tackle, uniform circular motion: angular speed, centripetal acceleration

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Lecture 08: Tricky friction, friction due to drag, ropes and tension

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Lecture 07: Normal force, friction, and inclined planes.

• The Big Bang Theory, inclined plane why 1/2 less force needed?

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Lecture 06: 3rd Newton’s law. Ropes, tension, and application of Newton’s laws

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Lecture 05: Finishing projectile motion, brief talk about relative motion, 1st and 2nd Newton’s laws, concept of mass

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Lecture 04: projectile motion, and relative motion

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• Demo: 30 meters car drop which is equivalent to 55 mi/h car collision with a wall.

Lecture 03: motion in 3D, vector notation

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Lecture 02: 1D position, displacement, distance, velocity, speed, acceleration

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