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Question 30660
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Circular Motion: JEE — Apparent Weight in Valley MCQ

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JEE — Apparent Weight in ValleyMediumQuestion 30660

Question

A car goes through the lowest point of a valley (radius r = 50 m) at 20 m/s. Apparent weight of a 60 kg person is: (g = 10)
  1. A
    600 N
  2. B
    480 N
  3. C
    1080 N
    Correct
  4. D
    840 N

Correct answer

1080 N

Explanation

At bottom of valley: N − mg = mv²/r → N = m(g + v²/r) = 60(10+400/50) = 60(10+8) = 1080 N.

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