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mechanical

Mechanical 1:

On which of the chains is more tension exerted?

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Mechanical 2:

In which direction will the light blue wheel spin?

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Mechanical 3:

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Mechanical 4:

Which axel will spin at a faster rate?

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Mechanical 5:

The numbers in the diagram indicate the number of teeth in each cogwheel. The cogwheel with 16 teeth is rotating clockwise and at a velocity of 24 rpm (indicated by the arrow). What will be the direction and velocity  of the red cogwheel?

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Mechanical 6:

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Mechanical 7:

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Mechanical 8:

If both pulleys have the same amount of weight, which one will require the most effort to pull.

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