Lecture_8

# Lecture_8 - Exam #1 Monday, September 26 Check Syllabus for...

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Exam #1 – Monday, September 26 Check Syllabus for rooms Check course webpage to preview instructions and (these will be provided with the exam) Students needing accommodation must have submitted paper work -- PHYS 110.

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Force, Displacement, Work, Kinetic Energy
Energy Newton's laws give rise to work and energy Very powerful problem solving tools Tell about limits – e.g how far can I push this box across the floor?

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Work Colloquial work is different (but often similar) to work as defined by physics. Work is the connection between force and energy Work depends on force, displacement, and the angle between them. To accelerate this object to a particular final velocity, you can apply a large force over a small distance or a small force over a large distance. The product of the two is a constant.
The “scalar product” (dot product) of force and displacement is work. “Scalar product” means we are only concerned with the component of force along the direction of displacement – or vice versa, we a free to chose. Yields

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## This note was uploaded on 12/07/2011 for the course PHYS 220 taught by Professor Chang during the Fall '09 term at Purdue.

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Lecture_8 - Exam #1 Monday, September 26 Check Syllabus for...

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