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The weight of 50 kg person at the surface of earth is

1. \( 50 N \)
2. \( 35 N \)
3. \( 380 N \)
4. \( 490 N \)

Correct answer: \( 490 N \)

Solution

Weight is the gravitational force on a mass, given by W = mg. For a 50 kg person on Earth, W = 50 × 9.8 = 490 N, so the correct choice is D.

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