CM and SHM Flashcards
What is angular displacement?
This refers to how much something rotates about a fixed point.
What is angular velocity? (rad^-1)
This is a measure to see the rate of angular rotation.
What is the centripetal acceleration?
When a particle is moving in a circular path, there is an acceleration towards the center, this is known as the centripetal acceleration.
What is the centripetal force?
The force acting towards the center of the circle.
What is simple harmonic motion? (Include the equation)
This is a repetitive motion about an equilibrium position. The equation that describes the motion is F= -kx.
What equation links acceleration and time.
-(2πf)^2x
What occurs when the amplitude of a pendulum is at a maximum?
The velocity is 0, and the kinetic energy is also 0, but the gravitational energy is at it’s maximum.
What occurs when the pendulum is at its equilibrium position?
The velocity and kinetic energy is at it’s maximum, but its gravitational energy is at it’s minimum.
What is a damped oscillation?
When friction or drag takes energy out of a system.
What is a materials resonant frequency?
This is the same as the materials natural frequency, this is when the driving frequency equals the natural frequency.
What are the effects of damping? (represented in a graph)
The amplitude is lower, and the peak is broader, and the peak occurs at a lower frequency than it’s natural frequency.
