A Mass of 4

question 47

Multiple Choice

A mass of 4.0 kg,resting on a horizontal,frictionless surface,is attached on the right to a horizontal spring with spring constant 30 N/m and on the left to a horizontal spring with spring constant 50 N/m.If this system is moved from equilibrium,what is the effective spring constant?

• A) 16 N/m
• B) 80 N/m
• C) 20 N/m
• D) −20 N/m

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