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Hint

1

hooke’s law

describes elongation & how the force is related to the distance

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2

spring (restoring) force

F=-kx, where k is the spring constant and x is the displacement of the spring from its unstrained length. The minus sign indicates that the restoring force always points in a direction opposite to the displacement of the spring from its unstrained length (newton’s law of action & reaction).

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3

elongation

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4

angular frequency

because ‘w’ is directly proportional to the frequency f, w is often called the

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5

period

the time required to complete one cycle for any object in simple harmonic motion

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6

simple harmonic motion

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7

amplitude ‘A’

the maximum displacement from equilibrium position

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8

elastic PE

the energy that a spring has by virtue of being stretched or compressed (kx^2/2)

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9

simple pendulum

a pendulum that consists of a particle mass ‘m’, attached to a frictionless pivot by a cable of length ‘L’ and neglible mass

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10

physical pendulum

a pendulum of a rigid extended object

length ‘L’ for a physical pendulum is the distance between the axis at ‘P’ and the center of gravity of the object

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