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PHYSICS ASAP?!(20)?
An object of unknown mass is hung on the
end of an unstretched spring and is released
from rest.
The acceleration of gravity is 9.81 m/s
2
.
If the object falls 6.16 cm before first coming to rest, find the period of the motion.
Answer in units of s.
2 Answers
- NCSLv 71 month agoFavorite Answer
Since it begins and ends "at rest," KE is not involved and the mass's GPE gets converted into spring SPE:
mgh = ½kh²
m/k = h / 2g = 0.0616m / 2*9.81m/s² = 0.00314 s²
T = 2π√(m/k) = 2π√(0.00314s²) = 0.352 s
