Diagram given below, shows an arrangement of four pulleys.

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asked Dec 7, 2018 in Class X Science by navnit40 (-2,747 points)

Diagram given below, shows an arrangement of four pulleys. A load L is attached to the movable lower block and effort E is applied at free end of the string.
Copy the diagram; and

icse-solutions-class-10-physics-46

(i) Draw arrows to indicate tension in each part of the string; and
(ii) Calculate the mechanical advantage of the system.

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1 Answer

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answered Dec 7, 2018 by priya12 (-11,268 points)

The following diagram shows a block and tackle system of 4 pulleys.
(i) The tension in each string is shown by the arrow marked as T.
(ii) If we neglect the friction of the pulleys and weight of the pulleys in the lower block, then
L = 4T and E = T

∴ Mechanical advantage = L/E

= 4T/T

= 4

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