A coolie holding a suitcase on his head of 20 kg and travels on a platform, then work done in joule by the coolie is

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A coolie holding a suitcase on his head of 20 kg and travels on a platform, then work done in joule by the coolie is

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A coolie holding a suitcase on his head of 20 kg and travels on a platform, then work done in joule by the coolie is

(A) 198 (B) 98 (C) 49 (D) zero
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