STANDARD Physics Force and Acceleration MCQ Question
A stone of mass 1 kg is lying on the floor of a train which is accelerating with 1 m s⁻². The net force acting on the stone is
Zero
1 N
5 N
10 N
Correct Answer
Detailed Explanation
The force acting on the stone is given by F = ma. Here, m = 1 kg and a = 1 m s⁻², so F = 1 kg × 1 m s⁻² = 1 N. The weight of the stone is balanced by the normal reaction of the floor.
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