Question

A 0.45·kg mass vibrates according to the equation x = 0.45 cos (8.36t + 4.92), where...

A 0.45·kg mass vibrates according to the equation x = 0.45 cos (8.36t + 4.92), where x is in meters, and t is in seconds.

(a) Determine the amplitude.
m

(b) Determine the frequency.

Hz

(c) Determine the total energy.

J

(d) Determine the kinetic energy and potential energy when x = 0.35 m.
kinetic energy =

J
potential energy = J

Homework Answers

Answer #1

use properties of simple harmonic motion to find the required amplitude, frequency and energy as shown below

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