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  • A man, of mass 60 kg, is riding in a lift. The weights of the man, when the lift is accelerating upwards and downwards at <img alt="2 \mathrm{~m} / \mathrm{s}^2" src="https://entrancecorner.oncodec

A man, of mass 60 kg, is riding in a lift. The weights of the man, when the lift is accelerating upwards and downwards at 2 \mathrm{~m} / \mathrm{s}^2 are respectively.

Option: 1

720 N and 480 N
 


Option: 2

480 N and 720 N


Option: 3

600 N and 600 N


Option: 4

None of these.


Answers (1)

best_answer

Case I : 
               {\text { lift } \square \uparrow a=2 \mathrm{~m} / \mathrm{s}^2}
                               \mathrm{N=m(g+a) }     ......(For upward accelerating)

                               \mathrm{N=60 \times 12}

                               \mathrm{N=720 }

Case II :

              \text { lift } \square \downarrow a=2 \mathrm{~m} / \mathrm{s}^2

                               \mathrm{N=m(g-a) }   ......(For downward accelerating)

                               \mathrm{N=60 \times 8}

                               \mathrm{N=480}

Posted by

shivangi.bhatnagar

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