PHY132_L05 - Classical Physics II Classical Physics II...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
lassical Physics II Classical Physics II PHY132 Lecture 5 The Electric Potential Lecture 5 1 02/03/2010
Background image of page 1

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

View Full Document Right Arrow Icon
Recap: Work and Energy In PHY131 we went from the discussion of (vector) forces and Newton’s Law: Σ F i =m a , to a very useful concepts: 1 s WORK done by force F : – (SCALAR!) 0 () F Wd s F ss KINETIC energy: • POTENTIAL energy can be defined, but for ( ) 2 1 2 iF F mW K m v = ⇒= Δ = Δ ∑∑ a CONSERVATIVE forces (where the work ONLY depends on the end positions of the trajectory !): ) ( ) ( ) U x U x W x x • ENERGY conservation (if NO non-conservative forces re present): , F F f Fi F f i UU Δ =− = Lecture 5 2 are present): 02/03/2010 ;0 Ff i F EU K E E E ≡+ Δ =
Background image of page 2

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

View Full Document Right Arrow Icon
Total Work and Kinetic Energy Typically the result of the total work on a mass m is not only displacement, but often also a change in its velocity.
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 9

PHY132_L05 - Classical Physics II Classical Physics II...

This preview shows document pages 1 - 5. Sign up to view the full document.

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