What is the single movable pulley ? What is its mechanical advantage in the ideal case ?

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A single movable pulley is a pulley that is free to move up and down, and is attached to a ceiling or other object as shown below:

The mechanical advantage of a single moveable pulley is 2.

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The mechanical advantage of an ideal single movable pulley is :

(a) 1 (b) 2

Give reasons for the following :

(a) In a single fixed pulley, the velocity ratio is always more than the mechanical advantage.

(b) The efficiency of a movable pulley is always less than $100 %$ .

(d) The lower block of a block and tackle pulley system must be of negligible weight.

Draw a labelled diagram of an arrangement of two pulleys, one fixed and other movable. In the diagram, mark the directions of all forces acting on it. What is the ideal mechanical advantage of the system? How can it be achieved?

What is the single movable pulley ? What is its mechanical advantage in the ideal case ?

What is the mechanical advantage of a single movable pulley in the ideal case?

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Standard VIII Physics

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What is the single movable pulley ? What is its mechanical advantage in the ideal case ?

A single movable pulley is a pulley that is free to move up and down, and is attached to a ceiling or other object as shown below: The mechanical advantage of a single moveable pulley is 2.

A single movable pulley is a pulley that is free to move up and down, and is attached to a ceiling or other object as shown below:

The mechanical advantage of a single moveable pulley is 2.