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Work and Energy — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceWork and Energy1 Mark
Question

A load of 100kg is pulled up by 5m. Calculate the work done. (8 = 9.8m/s)

✓

Answer

Mass = 100kg
Height = 5m
g = 9.8m/s2
P.E. = m × g × h
= 100 × 5 × 9.8 = 4900J
Work done is equal to PE acquired by the body.

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