A man whose mass is 80kg climbs a staircase in 20s and expends power of 120W. Find the height of the staircase.[g = 10ms-2]
a
1.8m
b
2.0m
c
2.5m
d
3.0m
Explanation
Correct Option
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1.8m
2.0m
2.5m
3.0m
No video available