A block and tackle system has the velocity ratio 3. A man can exert a pull of 200 kgf. What is the maximum load he can raise with this pulley system if its effeciency is 60%

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Dear Student

$E f f i c i e n c y = \frac{M e c h a n i c a l A d v a n t a g e (M A)}{V i l o c i t y R a t i o (V R)} 60 % = \frac{60}{100} = \frac{M A}{3} M A = 1.8 M A = \frac{L o a d}{A p p l i e d f o r c e} 1.8 = \frac{l}{200} L o a d l = 360 k g f$

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A block and tackle system has the velocity ratio 3. A man can exert a pull of 200 kgf. What is the maximum load he can raise with this pulley system if its effeciency is 60%

Dear Student Efficiency=Mechanical Advantage(MA)Vilocity Ratio(VR)60 %=60100=MA3MA=1.8MA=Load Applied force1.8=l200Load l=360 kgf Regards

Dear Student

$E f f i c i e n c y = \frac{M e c h a n i c a l A d v a n t a g e (M A)}{V i l o c i t y R a t i o (V R)} 60 % = \frac{60}{100} = \frac{M A}{3} M A = 1.8 M A = \frac{L o a d}{A p p l i e d f o r c e} 1.8 = \frac{l}{200} L o a d l = 360 k g f$

Regards