• 1. A chain hanging from a ceiling holds a 12kg lighting fixture in place. How much force is needed to keep the lighting fixture stationary? How much work is done?
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• 2. A chain hanging from a ceiling holds a 12kg lighting fixture in place. The lighting fixture originally had to belifted to its present height of 3m above the floor. How much work was done to accomplish this feat?

Answer rating: 100% (QA)

1 By using newtons second law on lightning fixture Fn... View the full answer