71st BPSC Prelims (2025), question 121

🔬 Science & Technology

  1. A force of 200 Newtons pushes a wooden box on the floor at constant velocity. The friction force will be:

    1. 100 Newtons
    2. 200 Newtons
    3. 300 Newtons
    4. 400 Newtons
    Show answer

    Answer: B — 200 Newtons

    At constant velocity, net force is zero, so friction exactly balances the applied 200 N.

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Bihar Public Service Commission