{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# W6.1 - Physics for Scientists Engineers 1 Spring Semester...

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

February 12, 2008 Physics for Scientists&Engineers 1 1 Physics for Scientists & Physics for Scientists & Engineers 1 Engineers 1 Spring Semester 2008 Lecture 19

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

View Full Document
February 12, 2008 Physics for Scientists&Engineers 1 2 Kinetic Energy: Summary Kinetic Energy: Summary Definition: (note: K can never be negative!) Energy unit: Work - Kinetic Energy Theorem: 1 J = 1 kg m 2 s -2 ! K " K # K 0 = W K = 1 2 mv 2
February 12, 2008 Physics for Scientists&Engineers 1 3 Work: Summary Work: Summary Work for constant force - 1d Work for constant force - 3d Work done by a variable force, 1d case Most general 3d case Work done against gravity Work changing length of spring W = F ( x ') dx x 0 x ! ' W = ! F ! r ' ( ) d ! r ' ! r 0 ! r ! W = ! 1 2 kx 2 + 1 2 kx 0 2 W = ! F ! ! r = ! F ! ! r cos " F ! r W = F ! " x = F ! ( x # x 0 ) W g = mgh

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

View Full Document
February 12, 2008 Physics for Scientists&Engineers 1 4 Power: Summary Power: Summary Definition of power as the rate at which work is done Average power over a time interval Δ t Unit of power (SI) Unit of power (non-SI) Common energy unit
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 10

W6.1 - Physics for Scientists Engineers 1 Spring Semester...

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

View Full Document
Ask a homework question - tutors are online