circular motion Flashcards
uniform circular motion
direction changes at every point but speed in constant
time for 1 rotation is represented in?
periods T (s)
Vtan =
2(pi)r/T (m/s)
frequency
number of revolutions per second
f= rev/ sec = 1 Hertz
The relationship between frequency and period is?
inverse
f= 1/T
T= 1/f
centripetal force
“center seeking”
direction of force towards the center
centripetal acceleration
the acceleration towards the center
Ac= v^2/r
changes in direction of objects velocity vector
Fc= mc (v^2/r)
FBD in circular motion
Fc does not go on FBD
-Ft, Fg, Ff start at the object and point towards the center
for an object to be in uniform circular motion there must be?
a net force acting on it
centripetal force
is a net force
with vertical circles toward the center is…
positive
What must be acting on an object in order for it to be in circular motion?
There must be a force acting on an object for it to be in circular motion
The centripetal force is a?
net force
With verticle circles which way is positive?
Towards the center in positive
