PHYSICS PULLEY QUESTION
please help
in my book it given that by using a second pulley you only need to apply 1/3 of the weight of the body ..
1) could someone please explain the figure for me
i have no clue how can that small force lift that huge weight
the image is at
http://tinypic.com/r/zl226o/5

Question

PHYSICS PULLEY QUESTION 
please help
in my book it given that by using a second pulley you only need to apply 1/3 of the weight of the body ..
1) could someone please explain the figure for me
i have no clue how can that small force lift that huge weight
the image is at
http://tinypic.com/r/zl226o/5

badhi · Answer

are you sure it is the 1/3 rd of the weight not 1/2 of the weight?

anonymous · Answer

yes im sure

anonymous · Answer

look at the fig .. it is directly from my book ? is it wrong?

badhi · Answer

If you look at the forces applied on the weight they don't sum up to zero which means the weight will fall

anonymous · Answer

thanks ... i expected so .... here a medal