oscillations/simple harmonic motion Flashcards
(15 cards)
what is angular frequency?
the same as angular velocity
what is the equation for displacement/x?
Acoswt or Asinwt where w is angular frequency.
what is the equation for velocity?
+or- w x root A squared - root x squared
what happens to the period if the amplitude increases?
it stays the same
how do the graphs for potential energy and kinetic energy relate?
they are the inverse of each other e.g. when Ek is in its minimum Ep is in its maximum.
equation for energy from velocity
E=1/2MV^2
what is damped harmonic motion?
the amplitude decays exponentially
what is resonance?
when driving frequency = natural frequency.
what must occur in an oscillating motion?
must start in an equilibrium position
what must occur in an oscillating motion?
must start in an equilibrium position
what is the phase difference of oscillating objects
the difference in displacement at different points in time. measured in degrees or radians.
how is acceleration found in simple harmonic motion?
a = -w^2X
what is w^2
a constant for a specific object in SHM. it is also the gradient for a X a graph
what is the relationship between a and x
they are directly proportional.
what direction does acceleration act relative to displacement?
opposite
