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:

- propotional to the displacement
- 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?>

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- oscillate either side of a midpoint

6

What is displacement?

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- distance from midpoint

7

WHat is the restoring force?

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- 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?

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- directly proportional to displacement

9

What does the restoring force cause?

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

10

Describe the characteristics of a oscillating objects speed

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- 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

- when the object passes through equilibrium - zero displacement
- the velocity is zero when the gradient of the displace-time graph is zero - maxiumum displacement