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ICSE Class 10 Answered

what is the  First Method Of Combination Of Pulley ?
Asked by bhumitshah73.10spicertl | 27 May, 2020, 05:32: PM
answered-by-expert Expert Answer
When a heavy load is to be lifted or shifted from one place to another, we require a pulley system of MA> 2, so a single movable pulley is not enough. A combination of several pulleys is then used.
 1. First Method : - Using one fixed pulley and other movable pulleys
Mechanical Advantage (M.A.) 
M. A. space equals space L over E space equals space 2 cubed space
In general, if n movable pulleys are connected with one fixed pulley,
then
M. A. space equals space 2 to the power of n

 If n movable pulleys are connected, then velocity ratio
 
V. R. space equals space 2 to the power of n
 

Answered by Shiwani Sawant | 28 May, 2020, 12:38: PM

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