A bucket of water 50kg is raised from a depth 100m. To the ground by a rope . The mass of the rope is 1kg per meter what is work done.

Given

Bucket of water = 50 kg,

dept or height h = 10 m,

mass = 1 kg/ m

g=9.8m/s

Weight of bucket = 50 x 9.8 x 10 (work done in lifting)

= 4900 J

Mass of rope 10 x 1 kg = 10 kg

weight t of rope = 10 x 9.8 = 98 N

Work done in raising the bucket = 98 x 10 = 980 J

Total work done = 4900 + 980 = 5880 J

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