Periodic Motion Flashcards
1
Q
Angular speed definition
A
Rate of change of angular displacement
2
Q
ω=
A
v/r
θ/t
(2π/T) full revolution
2πf
3
Q
Centripetal acceleration explanation
A
-direction and therefore velocity of an object is at a tangent to the circle (draw to visualise)
-because velocity always changes, there must be acceleration
-centripetal acceleration
4
Q
a=
A
(v^2)/r
(ω^2)r
5
Q
Centripetal force definition
A
The resultant force toward the centre of the circle acting on an object moving in a circular path
Perpendicular to velocity
6
Q
F=
A
(ma)
a=…
F=mv^2 /r
mω^2 r
7
Q
Rollercoaster/Gravity questions method
A
Fc=mgh (Fp)
