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प्रश्न
A lawn roller is pulled along a horizontal surface through a distance of 20 m by a rope with a force of 200 N. If the rope makes an angle of 60° with the vertical while pulling, the amount of work done by the pulling force is:
विकल्प
4000 J
1000 J
`2000 sqrt3 "J"`
2000 J
MCQ
उत्तर
`2000 sqrt3 "J"`
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