Question

Q.if a worker is holding a box of mass 200 kg to a height of 2 m for 10 s, what is the work done by the worker?
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Answer 1

Answer:

M = 20 kg

h = 1 m

Work done against gravitational force,

W = mgh

= 20 x 9.8 x 1

= 196 J

Step-by-step explanation:

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Answer 2

Answer:

m=10kg

m=10kgh=2m

m=10kgh=2mg=9.8m/s

m=10kgh=2mg=9.8m/s 2

m=10kgh=2mg=9.8m/s 2

m=10kgh=2mg=9.8m/s 2 Work done, W=mgh

m=10kgh=2mg=9.8m/s 2 Work done, W=mghW=10×9.8×2=196

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