1 / 7

WORK

WORK. 1. Work. Work – transfer of energy that occurs when a force makes an object move Two conditions for work: (A) object must MOVE AND (B) object must move in the SAME DIRECTION as the applied force. 2. Work and Energy.

fisk
Download Presentation

WORK

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. WORK

  2. 1. Work • Work – transfer of energy that occurs when a force makes an object move • Two conditions for work: • (A) object must MOVE AND • (B) object must move in the SAME DIRECTION as the applied force

  3. 2. Work and Energy • Remember…energy is the ability to cause change; in other words, the ability to do work • Energy is always transferred from the object that is doing the work to the object on which the work is done

  4. 3. Calculating Work • Work = Force X Distance • W= F X D • Force = N; Distance=M; Work = J • Greater force or distance…greater amount of work involved • (Distance only while force is applied to it.)

  5. 4. Power • Power – amount of work done in a certain amount of time; ie, the rate at which work is done • Power = Work/Time • Power is measured in watts (W)

  6. Watts • Named after James Watt, inventor of the steam engine • Watt is very small…about the power needed to raise a glass of water from the table • Thus, power is often measured in kilowatts • 1 kilowatt = 1,000 watts

  7. 5. Power and Energy • Doing work is one way of transferring energy from one object to another (not all energy requires work) • Power is produced or used any time energy is transferred from one object to another • Thus, Power = Energy/Time

More Related