Answer :

Mass of the bucket containing paint, m = 6.0 kg

Initial height of the bucket from ground, hI = 2.0 m

Final height of the bucket after falling, hF = 0.0 m

Acceleration due to gravity, g = 9.8 m/s2

Change in potential energy of the bucket = mg(hF-hI)

= 6.0 × 9.8 × (0.0-2.0)

= -117.6 J

Loss in gravitational potential energy = 117.6 J ≈118 J

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