The concepts of work and power help us unlock and understand many of the physical laws that govern our universe. In this Lesson, Peter Bohacek explores the interplay of each concept when applied to two common objects---a lightbulb and a grandfather c...lock. (04:30)[more]

An introduction to the physics equation for work, including a few basic examples of positive vs. negative work.
Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:07 The Work Equation
0:45 Physics work is not what you normally t...hink of as work
2:07 Example #1
2:46 Example #2
3:35 Example #3
4:10 Example #4
5:05 Joules, J, the units for work
5:43 Work is a Scalar
6:28 Better Off Dead
Next Video: Introductory Work Problem
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Previous Video: Physics “Magic Trick” on an Incline
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Mr.p pushes a shopping cart so you can learn about the physics concept of work! Want Lecture Notes? This is an AP Physics 1 topic.
Content Times:
0:09 Reading and translating the problem
0:52 Demonstrating the problem
1:30 Better Off Dead
2:04 ...Drawing the Free Body Diagram
3:14 Solving for work with two common mistakes
4:45 Work done by the Force of Gravity
5:16 Work done by the Force Normal
Next Video: Introduction to Kinetic Energy with Example Problem
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Previous Video: Introduction to Work with Examples
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Learn how to use Mechanical Energy when the Work done by Friction does not equal zero. Want Lecture Notes?
This is an AP Physics 1 topic.
Content Times:
0:09 When is Conservation of Mechanical energy true?
0:37 Work due to Friction equals the Ch...ange in Mechanical Energy
1:57 Determining the angle in the work equation
3:01 When the angle is not 180 degrees
3:50 What if the work done by friction is zero?
4:31 Always identify …
Next Video: Introductory Work due to Friction equals Change in Mechanical Energy Problem
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Previous Video: The Energy Song by Bo
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From youtube.com, produced by Jonathan Thomas-Palmer

Billy does an example problem to review the work equation.
Want Lecture Notes? This is an AP Physics 1 topic.
This video expands on what we did in “Conservation of Energy Problem with Friction, an Incline and a Spring by Billy”. Please make sure y...ou watch that video first.
Content Times:
0:26 The problem
1:11 The level surface
1:29 The incline
2:21 The values[more]

The equation Work due to Friction equals Change in Mechanical Energy can often be confusing for students. This video is a step-by-step introduction in how to use the formula to solve a problem. Want Lecture Notes? This is an AP Physics 1 topic.
Con...tent Times:
0:09 The problem
1:29 Why we can use this equation in this problem
1:52 Expanding the equation
2:29 Identifying Initial and Final Points and the Horizontal Zero Line
3:00 Substituting into the left hand side of the equation
4:05 Deciding which Mechanical Energies are present
4:59 Where did all that Kinetic Energy go?
5:27 Identifying which variables we know and do not know
5:58 Solving for the Force Normal
6:57 Substituting Force Normal back into the original equation
8:09 Why isn’t our answer negative?
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Previous Video: Introduction to Mechanical Energy with Friction
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A conservation of energy problem where all of the energy is not conserved. This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor us...es different colors for clarification. (10:04)[more]

Introduction to work and energy. This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor uses different colors for clarification. (09...:18)[more]

More on work and introduction to Kinetic and Potential Energies. This video, which is suitable for high school students, starts with a black screen because the instructor, in his conversational tone, uses it as a 'chalkboard.' Instructor uses differe...nt colors for clarification. (09:15)[more]

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