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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?

  • 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?

  • 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?

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