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A lift total mass M is raised by cables ...

A lift total mass M is raised by cables from rest to rest through a height h. the greatest tension which the cables can safely bear is n Mg. the maximum speed of lift during its journey if the ascent is to made. In shortest time is

A

`sqrt(2gh((n+1)/(n)))`

B

`sqrt(2ghn)`

C

`sqrt(2gh((n)/(n+1)))`

D

`sqrt(2gh((n-1)/(n)))`

Text Solution

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The correct Answer is:
D
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