What is the mass of the fish? You can ignore the mass of the spring.?

The scale of a spring balance reading from zero to 200 N is 12.5 cm long. A fish hanging from the bottom of the spring oscillates vertically at 2.60 Hz.

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What is the mass of the fish? You can ignore the mass of the spring.?

The scale of a spring balance reading from zero to 200 N is 12.5 cm long. A fish hanging from the bottom of the spring oscillates vertically at 2.60 Hz.

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The formula for the oscillation of a mass on a spring is T=2π√(m/k)

The relationship between frequency and period is T=1/f so the period is 1/2.60=0.3846 s.

From the information given, a force of 200N will stretch the spring by 0.125m.

That enables us to find the spring constant since k=F/x

k=200/0.125=1,600 N/m

Rearrange the formula

T=2π√(m/k)

T²=4π²m/k

m=kT²/4π²

m=_____________ kg