How much mass should be attached to a vertical ideal spring having a spring constant (force constant) of 75.0 N/m so that it will oscillate at 4.00 Hz?
a. 1.00 kg
b. 1.50 kg
c. 0.118 kg
d. 1.87 kg
e. None of the above
Frequency f = 1/2pi × sqrt(k/m)
( 2pi f)^2 = k/m
(2pi*4)^2 =75/m
m = 75/(8pi)^2
=0.118 if
Option c
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