Direction of the velocity vector in uniform circular motion
constant change
Magnitude of the velocity vector in uniform circular motion
constant
Direction of centripetal acceleration
(towards the) center
Causes circular motion
centripetal force
Relationship of centripetal force and centripetal acceleration
F=ma
What types of forces can act as centripetal force?
gravity, friction, normal, tension
What affects centripetal motion to move in a straight line once centripetal force stops?
inertia
The force that acts a centripetal force causing a circular orbit
gravity
Tangential speed
The speed of an object moving along a circular path. (Can be used interchangeably with linear speed for circular motion.)
Centripetal acceleration equation
ac = v�/r
Weight
the force of gravity on an object
Mass
A scalar quantity used to measure an object's inertia.
When a centripetal force disappears
motion continues with the same velocity and direction (a linear path that is tangential to the circle, does NOT continue circular motion as the direction is no longer changing)
Weight formula
F = mg
Circumference of a circle
2?r
RPM
revolutions per minute (measures angular velocity)
RPM to v
� circumference � 1min/60s
The force that acts as centripetal force when a car makes a turn.
friction
The force that acts as centripetal force when a clothes are spun in a dryer.
normal
The force that acts as centripetal force when a monkey swings on a vine.
tension