A 50-Kg Mass Sits on the Floor of an Elevator That

question 46

Multiple Choice

A 5.0-kg mass sits on the floor of an elevator that has a downward acceleration of 1.0 m/s². On top of the 5.0-kg mass is an object of unknown mass. The force of the elevator on the 5.0-kg mass is 80 N up. Determine the unknown mass.

• A) 3.3 kg
• B) 2.4 kg
• C) 1.6 kg
• D) 4.1 kg
• E) 5.0 kg

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