p6 Flashcards
refers to motion of a body turning about an axis, where each particle of the body moves along a circular path.
Rotation
are used to represent angular quantities.
Greek letters
angular position/displacement symbol, formula, unit
θ theta, θ=s/r, deg, rad, or rev
the angle made at the center of a circle by an arc equal to the radius
wrapped around the circumference.
symbol rad or c
RADIAN
is the shortest angle between the initial and the final position for an object in a circular motion around a fixed point.
is a vector quantity as it has both magnitude and direction.
Angular Displacement
is the rate at which an object rotates about an axis.
Angular velocity
Angular velocity symbol, formula, unit
ω, ω=θ/t, rad/s, deg/s, rev/s
represents the rate at which the angular velocity of an object changes with respect to time. It is analogous to linear acceleration (a) in linear motion.
Angular acceleration
Angular acceleration symbol, formula, unit
α, α= Δω/Δt, rad/s²
is a fundamental physical quantity that describes the rotational motion of an object.
It is a vector quantity and is defined as the product of an object’s moment of inertia and its angular velocity.
Angular momentum
Angular momentum symbol, formula, unit
L, L=I*ω, kg⋅m²/s.
occurs when an object or a system remains
at rest and does not tilt nor rotate.
both the net force acting on the object and the net torque (or moment) around any chosen point are zero.
Static equilibrium
is the measure of the force that can cause an
object to rotate about an axis.
In physics, it is simply the tendency of a force
to turn or twist.
Torque
is what causes an object to accelerate in linear
kinematics.
Force
counterclockwise rotation=
clockwise rotation=
positive +
negative -
