- Work and Kinetic Energy
- Work in Three Dimensions
- Gravitational Work
- Two Basic Concepts
- Pendulum Oscillation Calculation II
- Work and Energy
- Work and Force
- Work-Energy Theorem
- Power
- Experiment 5B
- Work and Dot Product Problem Solving Strategies
- Work on Sliding Box
- Spring - Object on an Inclined Plane with Friction
- Work on a Falling Ball
- Kinetic Energy and Friction
- Energy and Acceleration
- Kinetic Energy and Force

- Acceleration and Work
- Weightlifter
- Walking and Work
- Rolling and Work
- Kinetic Energy
- Kinetic Energy and Speed
- Qualitative Description of Work
- Work - Kinetic Energy
- Work Problems
- Fly in a Jar
- Second Law and Kinetic Energy
- Suitcase on a Conveyor Belt
- Exploding Projectile
- Descending a Slide
- Energy, Force, and Kinematics
- Work

Definitions, with proof that work is difference in kinetic energy.

8.01

*Physics I: Classical Mechanics*, Fall 1999

Prof. Walter Lewin

**Course Material Related to This Topic:**

- Watch Video clip from Lecture 11 (0:00 - 7:42)
Work and Kinetic Energy

Work defined by line integral; proof that work is difference in kinetic energy in 3D.

8.01

*Physics I: Classical Mechanics*, Fall 1999

Prof. Walter Lewin

**Course Material Related to This Topic:**

- Watch Video clip from Lecture 11 (7:42 - 13:04)
Work in Three Dimensions

Example of gravity acting on particle; proof that work is independent of path.

8.01

*Physics I: Classical Mechanics*, Fall 1999

Prof. Walter Lewin

**Course Material Related to This Topic:**

- Watch Video clip from Lecture 11 (7:42 - 13:04)
Gravitational Work

Work-Energy Theorem and conservation of mechanical energy restated.

8.01

*Physics I: Classical Mechanics*, Fall 1999

Prof. Walter Lewin

**Course Material Related to This Topic:**

- Watch Video clip from Lecture 18 (0:00 - 1:44)
Two Basic Concepts

8.01

*Physics I: Classical Mechanics*, Fall 1999

Prof. Walter Lewin

**Course Material Related to This Topic:**

- Watch Video clip from Lecture 18 (19:13 - 26:39)
Pendulum Oscillation Calculation II

8.01

*Physics I*, Fall 2003

Prof. Stanley Kowalski

Definition of the work-energy principle; work in one and three dimensions; variable force and work. Includes several examples.

**Course Material Related to This Topic:**

Energy transformations and conservation of energy; energy of system and surroundings; definition of kinetic energy, with equation (K = 1/2*m*v^{2}); definition of work done by a constant force, with equation (W_{applied} = F_{x}*δ x).

**Course Material Related to This Topic:**

8.01L

*Physics I: Classical Mechanics*, Fall 2005

Dr. George Stephans

**Course Material Related to This Topic:**

Work done by a force (W = F*d); conservation of energy.

Work done by objects moving against forces. Solution not included.

- Complete practice problem 1

Relation between work done and change in energy; when to use work-energy; potential energy defined; calculating changes in potential energy.

8.01L

*Physics I: Classical Mechanics*, Fall 2005

Dr. George Stephans

**Course Material Related to This Topic:**

Definition of Work-Kinetic Energy Theorem (K_{f} = K_{i} + W_{f},i); work done by non-constant force; work done along an arbitrary path; line integrals; definition of average power; definition of instantaneous power.

8.01T

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

Friction experiment setup and procedure.

8.01T

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

Class problems.

8.01T

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

4-part problem; finding work in terms of frictional force; stopping time; work to accelerate the box.

8.01

*Physics I*, Fall 2003

Prof. Stanley Kowalski

**Course Material Related to This Topic:**

- Complete practice problem 5

Motion of an object pushed by a spring up an inclined plane.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete practice problem 21
- Check solution to practice problem 21

Work done on a falling ball. Solution not included.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete practice problem 1

Change in kinetic energy of a puck sliding along a horizontal surface with friction. Solution not included.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete practice problem 5

Energy required to accelerate a car from rest to 10 mph, and from 10 mph to 20 mph. Solution not included.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete practice problem 6

Kinetic energy of a particle under the action of a variable force. Solution not included.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete practice problem 7

Work done on an accelerating block by the force of friction. Solution not included.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete practice problem 8

Work done by a weightlifter holding a barbell. Solution not included.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete practice problem 9

Work done by the floor on the feet of a walking person. Solution not included.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete practice problem 10

Work done on a ball rolling in a spiral path along the inside of a hollow cylinder. Solution not included.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete practice problem 11

Graph of kinetic energy of a falling object. Solution not included.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete practice problem 3

Speed of a ball dropped into a jar of oil. Solution not included.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete practice problem 4

Work done on a block by one person relative to that done by another person.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete practice problem 3
- Check solution to practice problem 3

Motion of an object sliding down an inclined plane.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete practice problem 4
- Check solution to practice problem 4

4 short qualitative problems on work, forces, kinetic energy, and weight.

8.01

*Physics I: Classical Mechanics*, Fall 1999

Prof. Walter Lewin

**Course Material Related to This Topic:**

- Complete practice problem 1a–1e
- Check solution to practice problem 1a–1e

2 short qualitative problems about weighing a fly in a closed, then open, jar.

8.01

*Physics I: Classical Mechanics*, Fall 1999

Prof. Walter Lewin

**Course Material Related to This Topic:**

- Complete practice problem 1f–1g
- Check solution to practice problem 1f–1g

Relative motion and energy of two objects.

8.01L

*Physics I: Classical Mechanics*, Fall 2005

Dr. George Stephans

**Course Material Related to This Topic:**

- Complete exam problem 1
- Check solution to exam problem 1

Dynamics of a suitcase placed on a moving conveyor belt.

8.01L

*Physics I: Classical Mechanics*, Fall 2005

Dr. George Stephans

**Course Material Related to This Topic:**

- Complete exam problem 9
- Check solution to exam problem 9

Finding the energy released by the explosion of a vertically launched projectile.

8.01L

*Physics I: Classical Mechanics*, Fall 2005

Dr. George Stephans

**Course Material Related to This Topic:**

- Complete exam problem 8
- Check solution to exam problem 8

Frictional work, speed at bottom, and transit time for sliding down.

8.01X

*Physics I: Classical Mechanics with an Experimental Focus*, Fall 2002

Dr. Peter Dourmashkin, Prof. Kate Scholberg

**Course Material Related to This Topic:**

- Complete exam problem 10
- Check solution to exam problem 10

Motion of a child sliding down a playground slide.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete exam problem B4
- Check solution to exam problem B4

Dynamics of a ball rolling down the inside of a hollow cone.

*Physics I*, Fall 2004

Dr. Peter Dourmashkin, Prof. J. David Litster, Prof. David Pritchard, Prof. Bernd Surrow

**Course Material Related to This Topic:**

- Complete exam problem 1c
- Check solution to exam problem 1c