Question

How much mass should be attached to a vertical ideal spring having a spring constant (force...

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

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Answer #1

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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