1) A point on the A string of a guitar oscillates in approximately simple harmon
ID: 2102537 • Letter: 1
Question
1) A point on the A string of a guitar oscillates in approximately simple harmonic motion with a frequency of 142 Hz and an amplitude of 1.05 mm. Find the maximum speed and acceleration of this point.
vmax=
amax=
2) For a record playing at 78 rpm, find the frequency and the angular velocity.
3) A uniform rectangular sign of width 48.2 cm, height 31.4 cm, and negligible thickness hangs vertically from supporting hinges attached at its upper edge. Find the period of small-amplitude oscillations of the sign. (ANSWER IN SECONDS)
4) Find the amplitude, angular frequency, and initial phase angle for the motion described by the graph shown in the figure below.
5) A 1.80 kg mass attached to a spring oscillates with a period of 0.440 s and an amplitude of 22.0 cm.
frequency = angular velocity =Explanation / Answer
a) max speed = wA = 23.73
max acceleration = w^2*A = 536.3
b)angular frequency = 2*pie*rpm/60 = 8.169
frequency = w*2*pie = 51,32
4) amplitute = 10
ang frequency = 2*pie/8 = 0.79
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