Question

. A man rises a weight of 1 Kg to a height of 1 m and holds it there for 30 s. How much work has he performed?


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Answer 1

Answer:

1×9.8J.

Explanation:The man is raising the 1 kg weight to height =100cm

=1m

we know that,

work done = Force×displacement

=mg×h

=1×9.8×1

So, work done=1×9.8J.