Question

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Answer 1

(i) A - Single Movable Pulley, B - Single Fixed Pulley.

(ii) To change the direction of force applied i.e., effort can be applied in a more convenient direction.

(iii) Given: L= 20kgf

In equilibrium, L=2T and E=T

: Effort needed, E= L/2

20kgf/2

= 10kgf

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Answer 2

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