Answer:

The ratio m_2/m_1 of the masses is 9.745
Explanation:
Formula for frequency when mass m_1 is hung on the spring:

where:
k is the spring constant
Formula for frequency when mass m_2 is hung on the spring along with m_1:

where:
k is the spring constant.
In order to find ratio m_2/m_1, Divide the above equations:

On Solving the above equation:

The ratio m_2/m_1 of the masses is 9.745
I pretty sure it’s the mantle
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