A machine, which is 75% efficient, uses 12 J of energy in lifting up a 1 kg mass through…
Physics · JEE Advanced · NTA Exams — Work, Energy and Power
A machine, which is 75% efficient, uses 12 J of energy in lifting up a 1 kg mass through a certain distance. The mass is then allowed to fall through that distance. the velocity at the end of its fall is (in ms–1)
- \(\sqrt{24}\)
- \(\sqrt{32}\)
- \(\sqrt{18}\)
- \(\sqrt{9}\)
Answer
(C) 18
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