Question 983602
For a Simple Harmonic Motion, d=(3/4)sin8πt 
find: 
(a) frequency
Period = 2pi/(8pi) = 1/4 seconds/cycle
f = 1/p = 4 cycles/sec
= 4 Hz
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(b) the least positive value of t for which d = 0
d(t) = 0 at t = 0
d(t) = 0 at t = 0.125 seconds