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## Homework Statement

When a 0.870kg mass oscillates on an ideal spring, the frequency is 1.33Hz.

a) What will the frequency be if 0.290kg are added to the original mass? Try to solve this problem without finding the force constant of the spring.

b) What will the frequency be if 0.290kg are subtracted from the original mass? Try to solve this problem without finding the force constant of the spring.

## Homework Equations

f=(1/T) or1/2π*√k/m

## The Attempt at a Solution

I'm at a loss as to how to approach this without using the spring constant k.

My attempt at a solution so far anyway:

frequency= c/m where c is a constant and m is the mass.

Solving for c in the equation 1.33 Hz=c/0.870kg I found c= 1.151

Then I divided c (1.151) by the original mass plus the added mass.

1.151/(0.870kg + 0.290kg) = .992

But this is incorrect, I want to attempt to do the prompt as instructed without using k but I'm at a loss currently. Any help would be greatly appreciated.