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
Answer:D
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