Calc07_5day1 - Hoover Dam Nevada & Arizona Photo by...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
Greg Kelly, Hanford High School, Richland, Washington Photo by Vickie Kelly, 2004 7.5 part 1 Work and Pumping Liquids Hoover Dam Nevada & Arizona
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Greg Kelly, Hanford High School, Richland, Washington Photo by Vickie Kelly, 2004 Hoover Dam Powerhouse Nevada & Arizona
Background image of page 2
Review: Hooke’s Law: F kx = A spring has a natural length of 1 m . A force of 24 N stretches the spring to 1.8 m . a Find k : F kx = ( 29 24 .8 k = 30 k = 30 F x = b How much work would be needed to stretch the spring 3m beyond its natural length? ( 29 b a W F x dx = 3 0 30 W x dx = 3 2 0 15 W x = 135 newton-meters W =
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Over a very short distance, even a non-constant force doesn’t change much, so work becomes: ( 29 F x dx If we add up all these small bits of work we get: ( 29 b a W F x dx =
Background image of page 4
The rope weighs 0.08 lb/ft. The bucket starts with 2 gal (16 lb) of water and is empty when it just reaches the top. Work: Bucket: 5 lb 20 ft 100 ft-lb = Water: The force is proportional to remaining rope. ( 29
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/12/2011 for the course MAC 2233 taught by Professor Smith during the Spring '08 term at University of Florida.

Page1 / 13

Calc07_5day1 - Hoover Dam Nevada & Arizona Photo by...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online