The principles of simple harmonic motion Flashcards Preview

A2 Physics F > The principles of simple harmonic motion > Flashcards

Flashcards in The principles of simple harmonic motion Deck (10):
1

What is simple harmonic motion?

defined as occilating motion in which the acceleration is:

  1. propotional to the displacement
  2. always in the opposite direction to the displacement

 

2

What is the equation that summarised SHM?

a ∝ -x

ie a = -contant X displacement x

3

What does the minus sign in the equation show?

the acceleration is in the opposite direction to the displacement

4

What does the constant of propotionaality dpeends on ?

T of the oscillation

the shorter T, the faster the oscillation

this means the larger the acceleration at any given displacement]

constant is greater as T decreases

5

What does an object with moving with SHM do?>

  • oscillate either side of a midpoint

 

 

6

What is displacement?

  • distance from midpoint

 

7

WHat is the restoring force?

  • there is always a restoring force pulling or pushing the object back toward the mid point

 

 

8

What does the size of the restoring force deoebd on?

  • directly proportional to displacement

9

What does the restoring force cause?

  • acceleration toward the midpoint
  • acceleration is directly proportional to displacement

 

 

10

Describe the characteristics of a oscillating objects speed

  • an object speeds up as it returns to equilibrium and it slows down as it moves away from equilibrium
  • the magnitude of the velocity is greatest when the gradient of the displacement-time graph is greatest -
    • when the object passes through equilibrium - zero displacement
      • the velocity is zero when the gradient of the displace-time graph is zero - maxiumum displacement