Download South Pasadena • Physics Name 5 · Applications of Forces Period

South Pasadena • Physics
Name
5 · Applications of Forces
Period
Date
OBJECTIVES & ASSIGNMENTS
Assignments
 5.1 Activity – Circles
 5.1 Notes – Circular Motion
 5.1 Worksheet
 5.1 Quick Check
 5.2 Notes – Gravitation
 5.2 Worksheet
 5.2 Quick Check
 5.3 Notes – Friction
 5.3 Worksheet
 5.3 Quick Check
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Chapter 9 Reading Guide
Chapter 12 Reading Guide
Unit 5 Review Packet
Unit 5 Practice Test
Labs
 Spinning Stopper
 Friction Lab Simulation
5.1 Objectives – Circular Motion
Chapter 9
 Calculate the frequency (rev / t) and speed of an object (v = 2 π r f) in circular motion.
 Know why the velocity vector points in the direction of motion of an object, which is tangent to the circular
path, and why the acceleration and force vectors point toward the center of the circular path. These are called
“centripetal acceleration” and “centripetal force.”
 Calculate the acceleration (aC = v2/r) and force (FC = mv2/r). Understand the relationships between
Force/acceleration, velocity, and radius.
 Explain why centrifugal force is fictitious.
5.2 Objectives – Gravitation
Chapter 12
 Know that every particle has an attractive force toward every other particle, which is the gravitational force.
 Calculate the gravitation force using Newton’s Law of Universal Gravitation (FG = GmM/r2). Understand the
relationship between the Gravitational Force, Masses, and Distances between the objects. Specifically,
understand that the Gravitational Force varies inversely as the square of the distance.
5.3 Objectives – Friction
 Know the difference between static and kinetic friction.
 Know that the coefficient of friction for a rougher surface is larger than that for a smoother surface.
 Know that the coefficient of static friction is generally larger than the coefficient of kinetic friction; that is, it
takes more force to get something moving than to keep it in motion.
 Describe how the mass of an object and the smoothness of the surface affects the force of friction. Know that
the surface of the contact does not.
 Can calculate the force of friction (fS ≤ μS N and fK = μK N) in a motion problem.