Question

To raise a 200 kg steel beam to a height of 10 m on a bridge being built requires work of (a) 2 kJ (b) 10 kJ (c) 19.6 kJ (d) 20 kJ
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Answer 1

Answer:

20.kj

Explanation:

beacuse you will divide 200/10 then it come 20.

mark it as branlist answer

Answer 2

Explanation:

19.6 Kj is the correct answer

W= mgh = 200×9.8m/s^2× 10

= 19.6 Kj