PHYS 101 Lecture 13: Momentum, Energy, and Work
57 views6 pages
7 Dec 2017
School
Department
Course
Professor
coffeemanatee724 and 28 others unlocked
26
PHYS 101 Full Course Notes
Verified Note
26 documents
Document Summary
One of the significant things about momentum and energy is that they are conserved in many situations. Scalar direction, but it can have a sign. Joules . we sometimes also measure it in calories: The mks unit of work is n-m or calorie = 4. 184 j. Example 3: you push an object across a table with a force of 10 n through a distance of 2 m. Example 4: you tug at a heavy box (50 kg) with a rope, making an angle of 30 o to the horizontal. the force you . = - mg sin( ) d = - 50 kg x 9. 8 m/s 2 . For example, if you were to carry the box up the same height at a constant velocity (ie, no net force), your work would be w grav (ie, a positive quantity) and the total work done would be zero again.
Get access
Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers