đ Key Concepts
⢠Thrust bearing function â it transmits axial (foreâandâaft) force from the shaft to the shipâs structure
⢠Difference between shaft rotation (torque) and shaft thrust (axial force)
⢠How the illustration uses curved arrows vs straight arrows to show different kinds of motion/force
đ Think About
⢠Look at the Rotating View: which arrows show the shaft turning around its axis, and which arrows show the shaft being pushed foreâandâaft?
⢠Think about how the propeller pushes the ship ahead: in that condition, which way will the shaft try to move, and which arrow in the figure matches that direction?
⢠Compare the arrows labeled F, G, H, and J: which pair best represents one circular motion plus one straightâline axial push?
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Before You Answer
⢠Identify which labels (F, G, H, J) are drawn as curved arrows around the shaft â these represent rotation.
⢠Identify which labels (F, G, H, J) are drawn as straight arrows along the shaft centerline â these represent thrust direction.
⢠Before choosing, verify that in your selected pair, one arrow must be curved (rotation) and one arrow must be straight (thrust).