Simple Harmonic Motion-Help Please :) 1. The problem statement, all variables and given/known data A loundspeaker diaphragm is producing a sound for 1.5 s by moving back and forth in a simple harmonic motion. The angular frequency of the motion is 8.50 104 rad/s. How many times does the diaphragm move back and forth? ________ times 2. Relevant equations ang.freq.=2pi/T f=1/T 3. The attempt at a solution Ok, so I plugged in w=85000rad/s and t=1.5s and got T=0.00007392 and f=13528.139 cycles/sec and multiplied that f i got by 1.5 sec to get 200292.209 cycles which is wrong.. I dont know what i did wrong...can someone help?