A $50\,kg$ man with $20\,kg$ load on his head climbs up $20$ steps of $0.25\,m$ height each. The work done in climbing is......$J$
A $50\,kg$ man with $20\,kg$ load on his head climbs up $20$ steps of $0.25\,m$ height each. The work done in climbing is......$J$
$5$
$350$
$100$
$3430$
A $50\,kg$ man with $20\,kg$ load on his head climbs up $20$ steps of $0.25\,m$ height each. The work done in climbing is......$J$
Total mass $= (50 + 20) = 70 kg$
Total height $= 20 × 0.25 = 5m $
Work done $= mgh = 70 × 9.8 × 5 = 3430 J$
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