Further Mechanics Flashcards
(17 cards)
Angular Speed?
The angle an object rotates through per second
Tangential Speed?
Where angular speed is written in terms of linear speed
Angular Speed and Linear Speed Proof?
Linear Velocity = Arc Length / Time
Arc Length = rθ
v = rθ / t
θ/t = linear speed
Angular Speed = v / r
Frequency?
Number of complete oscillations per second
Period?
The time taken for one complete revolution
Centripetal Acceleration?
Objects in a circle have a changing speed since their direction is always changing in this path meaning it has an acceleration directed to the centre which is centripetal acceleration
Constant Speed in circular motion?
This results in the linear velocity always changing but the magnitude of linear velocity staying the same
Centripetal Force?
The force that acts towards the centre of a circle and causes the centripetal acceleration for an object moving in a circle. Without this force the object would travel tangentially away from the circle
Equilibrium in simple harmonic motion?
The midpoint of an objects motion
Restoring Force?
For an object travelling with simple harmonic motion it pushes or pulls an object towards its equilibrium position, accelerating it towards this position where its magnitude is dependent on the displacement. As it moves between this position work is done between kinetic and potential energy with maximum potential at maximum displacement and maximum kinetic at equilibrium
Simple Harmonic Motion?
An oscillation in which the acceleration of an object is directly proportional to its displacement from its equilibrium position and is directed towards the equilibrium position
Graphs of Simple Harmonic Motion?
They follow cosine graphs in shape where velocity is 90 degrees out of phase with displacement and acceleration is 180 degrees out of phase with displacement
Cycle of Oscillation?
When maximum positive displacement goes to maximum negative displacement and back again to maximum positive displacement
Frequency and Period in simple harmonic motion?
In simple harmonic motion the frequency and period are independent to the amplitude
Mechanical Energy?
The sum of potential and kinetic energy for an object moving with simple harmonic motion
Simple Harmonic Oscillator?
A system in which acceleration is directly proportional to the displacement from a fixed equilibrium position which it is always directed to. An example of this is a mass attached to a spring
Mass-Spring system experimentally?
