Studied by 0 peopleUniform Circular Motion
Constant Speed in a Circular Path
Is circular motion a form of accelerated motion?
yes
What causes acceleration
force
How do you change an object’s direction without changing its speed?
Use a force that acts perpendicularly to the direction of its velocity
To make an object move with uniform circular motion, the net force must always be directed toward the ___
center of the circle (inward)
Centripetal Force
Any force that acts inward
+velocity
+inward force
+mass
+Inward force
+ radius
inward force
FC=
mv^2/r
AC=
v^2/r
Period (T)
time it takes to complete one revolution
Units: s
r = 1/f
Frequency (f)
the number of revolutions made per unit of time
Units: rev/s
f = 1/r
Object’s linear speed (v) =
v = 2pir/T or v = 2pirf
FT =
mv^2/r
#g’s =
FN/FW or v^2/r/g
v(using g’s) =
root(#g**r**g)
FC required =
FSMAX =
mv^2/r
umg
What effect does a vehicle’s mass have on its ability to turn?
No effect
radius +
max speed +
u +
max speed +
speed +
min radius +
u +
min radius -
radius +
u -
velocity +
u +
As an object spins faster
horizontal component of tension +
vertical component always mg
angle +
Tsintheta =
Tcostheta =
tantheta =
mv^2/r
mg
v^2/rg or Fx/Fy
v (banked turn) =
root(rgtantheta)
Note
Flashcard