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Kg m/s : kilograms meters per second
Protons and neutrons. Explanation:
Protons are massive, positively charged
nuclear particles.
Answer:
The effective force constant is 1233.33 N/m.
Explanation:
It is given that,
Force constant 1, 
Force constant 2, 
Force constant 3, 
The effective force constant if one is hung from the other in series is given by :



So, the effective force constant is 1233.33 N/m. Hence, this is the required solution.