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A string of negligible thickness is wrapped several times around a solid cylinder, which is kept on a rough inclined plane. A man exerts a force F through the string as shown in figure and slowly rolls the cylinder up through a vertical height `h`. The work done by the man is? (angle of inclination is 30 degree.)A) F.h/2 B) F.hC) F.2h D) F.4h

Arun Kumar IIT Delhi
7 years ago
$F*h/sin(\theta)\\ =>F*2h$
Arun Kumar
IIT Delhi