JEE Main 2019 — Work Power Energy Question with Solution
JEE Main 2019 (09 Apr Shift 1)
Question
A uniform cable of mass and length is placed on a horizontal surface such that its part is hanging below the edge of the surface. To lift the hanging part of the cable upto the surface, the work done should be:
Choose an option
Show full solutionCorrect option: A
Correct answer
A
Step-by-step explanation
Mass of the part hanging is . Centre of mass of this part lies distance from the surface.
Work done in lifting the hanging part to surface is
Work done in lifting the hanging part to surface is
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This is a previous-year question from JEE Main 2019, covering the Work Power Energy chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.