1. An ideal massless spring is hanging vertically. When an unknown mass is attac
ID: 2104344 • Letter: 1
Question
1. An ideal massless spring is hanging vertically. When an unknown mass is attached to the spring, the spring stretches by 4.6 cm before reaching a new equilibrium. Then the mass is displaced by 1.6 cm from the new equlibrium. What is the frequency of the resulting oscillation?
2. You are driving east at a speed of 29. In the rearview mirror, you see an ambulance approaching at what you estimate to be roughly twice your speed. You hear the siren of the ambulance at 451 Hz. What is the frequency of the siren?
help quick !! due at 12am !!!!!
Explanation / Answer
f = sqrt(k/m)
m= k*(1.6/100)/9.8
f = sqrt(9.8/(1.6/100)) = 24.748737341529163354 rad/sec =3.94088174228171391 Hz answer
f = 451*(340.29+29)/340.29 =489.43486438038144 Hz answer
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