I can only hope you units are standard units, kg, N/m, meters. Units are important.
b. If speed is half, KE is down to 1/4, which means PE is 3/4 max
or distance is 3/4 * 3.2 (meters?, centimeters?).
A 0.45 mass is attached to a spring with a force constant of 26 and released from rest a distance of 3.2 from the equilibrium position of the spring.
a.What is the maximum speed of the mass? (m/s)
b.How far is the mass from the equilibrium position when its speed is half the maximum speed? (cm)
Vmax=A sqrt(K/M) = .24m/s that's correct
half speed = .12m/s
A= vmax sqrt(m/K) = 1.6cm
but that's wrong?
CAn anyone tell me where i went wrong in the second part?
Thanks
3 answers
You need to get the right answer, 1.6 is not the correct answer.
peanus