An Object Attached to a Spring Is Pulled Across a Horizontal

question 109

Multiple Choice

An object attached to a spring is pulled across a horizontal frictionless surface. If the force constant (spring constant) of the spring is 45 N/m and the spring is stretched by 0.88 m when the object is accelerating at $1.4 \mathrm {~m} / \mathrm { s } ^ { 2 }$
what is the mass of the object?

• A) 31 kg
• B) 36 kg
• C) 24 kg
• D) 28 kg

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