Multiple choice question XIX — task. Science CBSE, Class 9.

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A man weighing \(80\ kg\) climbs a staircase carrying a \(20\ kg\) load. The staircase has \(40\) steps, each of \(25\ cm\) height. If he takes \(20\ s\) to climb, the work done is:

\(98\ J\)
\(980\ J\)
\(9800\ J\)
\(98 \times 10^5\ J\)

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19. Multiple choice question XIX

Exercise condition: