Forces 3
REMINDERS (containing HW, offers, alerts, etc.) FROM REMIND.COM ARE ONE LEVEL UP AT THE MAIN PHYSICS PAGE.
UNIT: FORCES III
CENTRAL TOPICS OF UNIT:
Sliding Friction
Inclined Plane Forces
Hooke's Law
MATERIALS REQUIRED: (all found below for download)
Friction Notes, Question Packet and Key
Inclined Plane Notes, Question Packet and Key
Hooke's Law Notes, Question Packet and Key
E-TEXT READINGS:
Friction - Lesson 2 @ http://www.physicsclassroom.com/Class/newtlaws/u2l2b.cfm#friction
Inclined Plane - Lesson 3 E @ http://www.physicsclassroom.com/Class/vectors/
Hooke's Law - Paragraph @ http://www.physicsclassroom.com/Class/newtlaws/U2L2b.cfm#spring and then
@ http://www.physicsclassroom.com/Class/waves/u10l0d.cfm#p2(Hooke's Law)
TEXT READINGS: (optional)
Friction - Ch 6 p. 130
Inclined Plane - Ch 7 p. 152
HOW TO JUSTIFY YOUR ANSWER?
OUTLINE
Friction
Coefficient of Friction - a quantity related to the 'stickiness' at the interface between two materials
Normal Force - equal and opposite to weight when on horizontal ground or a surface parallel to it.
Static vs. Kinetic - comparing friction when at rest and while moving
Net Forces - the addition of multiple forces acting in one or two dimensions
LABORATORY - Which is greater? Static or Kinetic Friction
Inclined Plane
New Frame of Reference - introducing the parallel and perpendicular components of forces on a ramp of angle theta from the ground
Normal Force - equal and opposite to perpendicular component of weight
Net Forces on a Ramp - analyzing multiple forces such as gravity, friction, and applied forces.
LABORATORY - What is the coefficient of friction for our surface?
Hooke's Law
Spring Elongation/Compression - the amount of displacement
Spring Force - force acting on & force applied by springs
Spring Constant - the 'stiffness' of the spring
Potential Energy contained - ability to do work
LABORATORY - How stiff is the spring? (What is its spring constant?)