Question

8. An object of mass 1 kg is lifted to a vertical height of 1 m, the work done is
(a) 9.8 j
(b) 1 J
(c) 980 J
(d) .98 j​

Answer 1

Answer:

9.8 Joule

Work=mgh

1*9.8*1=9.8 joule

Explanation:

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Answer 2

Answer:

Work = Force ∗ displacement

and Force = Mass ∗ acceleration

Acceleration = gravity and displacement = height

Force = mg, Work = mgh i.e 1 ∗ 9.8 ∗ 9.8 = (9.8)