The gravitational potential energy will increase by 423.36 J
PE = mgh
PE₁ = 72 × 9.8 × 0
PE₁ = 0 J
PE₂ = 72 × 9.8 × 0.6
PE₂= 423.36 J
Change in potential energy = PE₂ - PE₁
Change in potential energy = 423.36 - 0
Change in potential energy = 423.36 J
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Answer:
lights need elewctricity
Explanation:
A