Please tell me this question

Asked by jatinsharma2435 | 29th Mar, 2021, 02:31: PM

Expert Answer:


Figure shows the system consists of 4 pulleys and 3 strings.
 
Tension forces , Effort E and Load W are shown in figure .
 
Effort E = T1 ............... (1)
 
T2 = 2 T1 = 2 E  .................(2)
 
T3 = 2 T2 = 4 E  ...............(4)
 
T4 = W = 2 T3 = 8 E
 
Hence mechanical advantage ,  MA = W / E = 8
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Assumptions :-
 
(1) Friction forces are negligible in the pulley
 
(2) Mass of pullies are negligible compared to Load mass m
 

Answered by Thiyagarajan K | 29th Mar, 2021, 05:53: PM