An object of mass 'm' is suspended in an elevator moving downward with acceleration equal to acceleration due to gravity. What is the apparent weight of object?
Correct answer: A. Zero
- A. Zero
- B. 2mg
- C. mg
- D. mg/2
Explanation
The apparent weight of the object is the force exerted on it by the elevator floor, which is equal to the net force acting on the object.Using the formula Fnet = mg - ma Where,m is the mass of the object g is the acceleration due to gravity a is the acceleration of the elevatorIn this case, the elevator is moving downward with an acceleration equal to the acceleration due to gravity, which means a = g.Therefore,Fnet = mg - ma = m(g - g) = 0.So, the apparent weight of the object is zero. Option A is the correct answer.
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