Physics 100: Mastering Work, Energy, and Power
4.6 (29 ratings)
Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately.
210 students enrolled

Physics 100: Mastering Work, Energy, and Power

Comprehensive course including lectures and problem solving tutorials.
4.6 (29 ratings)
Course Ratings are calculated from individual students’ ratings and a variety of other signals, like age of rating and reliability, to ensure that they reflect course quality fairly and accurately.
210 students enrolled
Last updated 3/2018
English
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Current price: $13.99 Original price: $19.99 Discount: 30% off
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This course includes
  • 7 hours on-demand video
  • 3 downloadable resources
  • Full lifetime access
  • Access on mobile and TV
  • Certificate of Completion
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What you'll learn
  • Solve a wide range of physics problems using energy concepts.
  • Understand and be able to apply the Work-Energy theorem to solve problems
  • Calculate Power
  • How to calculate the work done by spring forces, gravitational forces, and frictional forces
  • Understand the concepts of potential energy and conservation of energy
  • Able to read and understand potential energy curves
Requirements
  • basic knowledge of forces
  • basic algebra
Description

This comprehensive course covers kinetic energy, work, potential energy and conservation of energy.   The course combines lectures that summarize the important concepts and tutorials that will guide you and help you develop a problem solving strategy.  You'll learn how to apply conservation of energy principles to study the dynamics of systems.

Topics include in this class are:

1) Kinetic Energy, Work

2) Applying Work-Energy Theorem

3) Work done by gravitational forces, springs

4) Power

5) Potential Energy and Conservation of Mechanical Energy

There are over 40 fully solved problems ranging in difficulty.   I've mixed in many conceptual problems as well as algebraic problems to help you practice applying energy principles to solve problems.

If at any point you don't understand something in my videos please feel free to reach out.  I'm always willing to help someone learn.  Physics Ninja always has your back!

Happy Learning

Dr. E., Physics Ninja and Expert Physics and Math Teacher.

Who this course is for:
  • AP physics students
  • College physics students
  • First year undergraduate physics students
  • Students preparing for the MCAT exam
  • Anyone who wants to learn how to use energy methods to better understand the dynamics of systems
Course content
Expand all 79 lectures 06:49:44
+ Introduction
29 lectures 01:54:11

I've attached the Lecture Notes to this video.  Don't forget to download them!

Why use Energy?
01:22
What is Energy?
02:23
Kinetic Energy
01:48
Example 1: Which has biggest kinetic energy?
02:30
Special Case of Constant Acceleration
05:58
Connection Between Energy and Force: Work
01:29
Definition of Work for a Constant Force
03:15
Units of Work
01:39
Work: Positive, Negative, or Zero
04:36
Example: When the Work is Zero
02:53
Example: Lifting a Box
02:31
Example: Work done pulling a sled
01:44
Work done by Multiple Forces
01:54
Example: Revisit Pulling on the Sled
05:34
Work-Energy Theorem
01:45
Work done by the Gravitational Force
04:10
Gravitational Potential Energy
05:02
Potential Energy and Picking a Reference Point
02:24
Connection to Conservation of Mechanical Energy
05:43
Problem Solving Strategy for Conservation of Mechanical Energy
01:03
Example: Platform Diver
05:19
Example: Launching balls off a cliff
04:13
Example: Blocks connected by a rope
08:44
Example: Work Energy Theorem applied to uniform circular motion problems
06:08
Work done by a position dependent force
07:10
Work done by a position dependent force: part 2
03:31
+ Springs
10 lectures 51:30
Review of Hooke's Law
05:07
Work done during stretching
06:30
Compare Spring to Gravity
05:37
Potential Energy in a Spring
06:46
Extended Work Energy Theorem
06:24
Connection to Between Force and Potential
03:59
Example: Spring Problem
04:23
Example 2: Spring Problem
10:06
+ Work, Energy and Newton's Universal Law of Gravitation
4 lectures 26:30
Example: Work done by the Force of Gravity
07:40
Gravitation Potential Energy
07:16
Escape Velocity of Earth
06:55
Example: Really fast rocket launch
04:39
+ Power
4 lectures 15:47
Introduction to Power
01:30
Instantaneous Power
05:17
Units of Power
03:20
Example: Elevator Power
05:40
+ Multiple Choice Questions
10 lectures 40:05
Multiple Choice: Problem 1
02:59
Multiple Choice: Problem 2
03:57
Multiple Choice: Problem 3
03:46
Multiple Choice: Problem 4
04:01
Multiple Choice: Problem 5
04:56
Multiple Choice: Problem 6
05:03
Multiple Choice: Problem 7
04:18
Multiple Choice: Problem 8
03:21
Multiple Choice: Problem 9
07:21
+ Energy Problem Set
22 lectures 02:41:41
Introduction to Energy Problem Set
00:23
Solution: Problem 1
06:28
Solution: Problem 2
03:45
Solution: Problem 3
07:49
Solution: Problem 4
03:52

The first part of this problem involves a bit of calculus.   Part b) is more important where you are asked to apply the potential equation formula.

Solution: Problem 5 ( Some Calculus)
07:26
Solution: Problem 6
03:51
Solution: Problem 7
09:09
Solution: Problem 8
11:25
Solution: Problem 9
07:29
Solution: Problem 10
05:53
Solution: Problem 11
08:50
Solution: Problem 12
06:02
Solution: Problem 13
08:38
Solution: Problem 14 (Calculus-based)
07:56
Solution: Problem 15
08:28

Parts (a) and (b) should be straightforward but part (c) is a little harder.  Think about what it means for the strings to remain straight (taught).

Solution: Problem 16 (Part C - Advanced Problem)
14:20
Solution: Problem 17
07:11
Solution: Problem 18
08:55
Solution: Problem 19
08:14
Solution: Problem 20
06:42
Solution: Problem 21
08:55