{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture-11 - Work WorkandEnergy Lecture#11 Ch.6.4 6.9...

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

View Full Document Right Arrow Icon
Work and Energy L t #11 Ch 6 4 6 9 Lecture #11 – Ch. 6.4 – 6.9 Physics 125 – Fall 2010 Dr. Mike Melnichuk [email protected] Office: 2409 Randall Lab [email protected] Office Hours: 2:00 4:00 / Mon & Tue in Rm 1416 Randall Lab Office Hours: 2:00 – 4:00 / Mon. & Tue. in Rm. 1416 Randall Lab.
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
Gravitational Potential Energy Work done by the Force of Gravity (Weight): ( ) ( ) gravity 0 0 0 f W mg cos 0 s mg h h mgh mgh PE PE . = ° × = = = PE mgh (G it ti l) P t ti l E = (Gravitational) Potential Energy
Background image of page 2
Work of Gravity Work done by the Force of Gravity (Weight) in this case: gravity 0 0 f W mgh mgh PE PE . = = The Work done by the force of gravity (mg) is The Work done by the force of gravity (mg) is INDEPENDENT of the path; it depends ONLY f 0 on the final (h ) and initial (h ) height ralative to the surface of the Earth to the surface of the Earth.
Background image of page 3

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

View Full Document Right Arrow Icon
Conservative Force Th F f G it i The Force of Gravity is a CONSERVATIVE FORCE. A CONSERVATIVE FORCE is a force for which the Work done b it i i d d t f th th b t th i iti l d fi l iti by it is independent of the path between the initial and final positions.
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 ]}