PES 100 –Physics in Everyday Life – Exam #2 Study Guide
Chapters 3, 4 and 7: Mechanical objects; Fluids; Period Motion
Definitions
1.
Gee-force is:
A. A measure of perceived force due to acceleration that is measured relative to gravitational force.
B. The force due to the acceleration of gravity on planets other than Earth.
C. A method of calculating gravitational force based on spring balances.
Centripetal force and centrifugal “force”, Spring constant, fictitious force, Real force, apparent weight,
displacement, Coefficient of restitution, Relative and inertial reference frames, Center of percussion, Node & antinode, Gee forces, Radius of curvature, Static/dynamic equilibrium. Stable/Unstable equilibrium
Fluids, Buoyancy, Pressure, Temperature scales, Heat, Air pressure, Harmonic oscillators
Amplitude, Wavelength, Frequency, Period, Transverse and longitudinal waves, Compression/rarefaction in sound
waves, Pitch and frequency, Fundamental frequency/harmonic, Resonance,
Units
Pressure, frequency, wavelength, period, pitch
Relationships
2.
You are spinning on a carousel. If you move toward the center, the fictitious outward force you feel
(centrifugal force) becomes:
A. Greater
B. Less
3.
The period of a pendulum depends on all but which of the following quantities?
A. Gravity
B. Mass
C. Length
Central acceleration & angular speed and distance from spin axis; Springs & force; Springs & energy; Spring scales;
Bouncing balls and stored energy, surface interaction and relative motion; Liquid and gas pressure & temperature
and density
Pressure & force and area; Fluid pressure at depth/height; Temperature scales; Archimedes’ Principle; Temperature
& density of air; Pressure & particle density (H, He); Bernoulli’s principle; Pendula & length, mass, gravity
Wave speed & wavelength and frequency; Pitch & tension, mass, length; Fundamental and secondary harmonics;
Applications
4.
Which type of equilibrium requires that an object’s center of mass be over its base?
A. Static equilibrium
B. Dynamic equilibrium
Buoyancy
Car turning, banking
Octaves
Elevator
Springs and measuring weight
Center of mass over the base.
R. Gist
1
Spring 2005