1)A portable animal cage that weighs 5,165 N rests on thefloor. How much work (i

Question

1)A portable animal cage that weighs 5,165 N rests on thefloor. How much work (in J) is required to lift it 6.0 mvertically, at constant speed? (Answer: 3.10x10^4) 2)A steel ball with a mass of 5.6 kg is dropped directly ontoa nail from a height of 0.5 m. What is the most work (in J) itcould possibly do on the nail? (Answer:2.74x10^1) 1)A portable animal cage that weighs 5,165 N rests on thefloor. How much work (in J) is required to lift it 6.0 mvertically, at constant speed? (Answer: 3.10x10^4) 2)A steel ball with a mass of 5.6 kg is dropped directly ontoa nail from a height of 0.5 m. What is the most work (in J) itcould possibly do on the nail? (Answer:2.74x10^1) 2)A steel ball with a mass of 5.6 kg is dropped directly ontoa nail from a height of 0.5 m. What is the most work (in J) itcould possibly do on the nail? (Answer:2.74x10^1)

Explanation / Answer

(1) Work = mgh = 5165 N * 6 m (Note that 5165 N is mg and notm) = 3.09*104 ˜ 3.10x10^4 (2) Again, Work = mgh = (5.6 kg)(9.8 m/s2)(0.5 m)= 2.74x10^1

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