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Work..

Work. What is it?. Definition . Work is the transfer of energy through motion Work = Force x Distance. Work Video . http://videos.howstuffworks.com/hsw/12915-work-and-the-simple-machine-work-defined-video.html. BLM 4-3. 100J = _____________ x 1 m 100J = _____________ x 2 m

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Work..

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  1. Work.. What is it?

  2. Definition • Work is the transfer of energy through motion • Work = Force x Distance

  3. Work Video http://videos.howstuffworks.com/hsw/12915-work-and-the-simple-machine-work-defined-video.html

  4. BLM 4-3 • 100J = _____________ x 1 m • 100J = _____________ x 2 m • 100J = _____________ x 5 m • 100J = _____________ x 10 m • 100J = _____________ x 50 m • 100J = _____________ x 100 m Easiest way… Fastest way….

  5. Vivan and Christy were having a tug of war with their gym teacher. The distance to pull was 3 m. They pulled as hard as they could, but they could not move him. Assuming the teachers mass was 90 kg and Vivan and Christy pull with a force of 800 N, how much work did they do? Show your calculations…

  6. Smiley Joe’s Garage uses a block and tackle style pulley to help lift engines out of customers’ cars for repairs. One customers engine has a mass of 221 kg. To lift the engine out entirely, Smiley Joe has to raise it 1.5 m. How much work will he do?NOTE: 1kg = 10 N

  7. Ramps…

  8. To assist with a class demonstration, a student, (whose mass is 60 kg) filled a water balloon with 2 kg of water. He then climbed to the second floor of the school ( 2.5 m above the ground) and held the balloon out of a window. How much work did the student do?

  9. With the class watching from a safe (and dry) distance below, suppose the student drops the balloon and the balloon hits the sidewalk with a force of 20 N. How much work was done on the sidewalk by the balloon?

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