Someone have me this problem claiming that I only need to use logs to solve it, though it seems to have a physics origin:
If a coil spring is stretched 1.5 m beyond its resisting 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 tan 10 cm from its resting point?
I do not have much of a physics background, but could someone explain to me how this converts into a log equation? I tried myself several avenues (mainly of the form a = blog(c)^d) but nothing seems to work