SOLUTION: Please help me solve this following word problem: If a coil spring is stretched 1.5m beyond its resting point and then released it will return to a point which is 90% of the previo
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Question 388828: Please help me solve this following word problem: If a coil spring is stretched 1.5m beyond its resting point and then released it will return to a point which is 90% of the previous distance from the resting point. How many vibrations are required before the spring moves less than 10cm from its resting point? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! If a coil spring is stretched 1.5m beyond its resting point and then released it will return to a point which is 90% of the previous distance from the resting point. How many vibrations are required before the spring moves less than 10cm from its resting point?
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1.5m = 1.5*100 = 150 cm
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Solve: 0.09^t*150 cm < 10cm
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0.9^t < 1/15
t < log(1/15)/log(0.9)
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t < 25.7 (# of vibrations required)
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Cheers,
Stan H.
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