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Question

The diagram shows an arrangement of three pulleys A,B and C. The load is marked as L and the effort as E. Name the pulleys those are movable or fixed.

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A
A and C-movable pulleys, B-fixed pulley.
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B
B and C-movable pulleys, A-fixed pulley.
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C
A,B and C-movable pulleys.
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D
A and B-movable pulleys, C-fixed pulley.
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Solution

The correct option is D A and B-movable pulleys, C-fixed pulley.
As we know that tackle are those which are movable in nature and load is always attached on it hence pulley "A" and "B" are movable pulley and pulley "C" is know as block which is fixed known as block hence is effort is applied on it.

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