A paddle boat is propelled to the left in the figure above by a wheel of nine flat blades that rotate about a central axis. Which of the following is correct?
(1 point)
Responses
The wheel should rotate in a counterclockwise (CCW) direction because the force exerted on the water by the blade is in the direction exerted by the blade on the water.
The wheel should rotate in a counterclockwise (CCW) direction because the force exerted on the water by the blade is in the direction exerted by the blade on the water.
The wheel should rotate in a clockwise (CW) direction because the force exerted on the water by the blade is in the direction exerted by the blade on the water.
The wheel should rotate in a clockwise (CW) direction because the force exerted on the water by the blade is in the direction exerted by the blade on the water.
The wheel should rotate in a clockwise (CW) direction because the force exerted on the water by the blade is in the direction opposite to the force exerted by the blade on the water.
The wheel should rotate in a clockwise (CW) direction because the force exerted on the water by the blade is in the direction opposite to the force exerted by the blade on the water.
The wheel should rotate in a counterclockwise (CCW) direction because the force exerted on the water by the blade is in the direction opposite to the force exerted by the blade on the water.
The wheel should rotate in a counterclockwise (CCW) direction because the force exerted on the water by the blade is in the direction opposite to the force exerted by the blade on the water.
The correct response is:
The wheel should rotate in a counterclockwise (CCW) direction because the force exerted on the water by the blade is in the direction opposite to the force exerted by the blade on the water.
To determine the correct answer, we need to analyze the forces involved in the motion of the paddle boat. When the blades of the paddle rotate, they exert a force on the water, and according to Newton's third law of motion, the water exerts an equal and opposite force on the blades.
The force exerted on the water by the blade is in the direction exerted by the blade on the water, which means the force is directed from the blade towards the water. Since the water exerts an equal and opposite force on the blade, the force exerted by the water on the blade is in the direction opposite to the force exerted by the blade on the water.
Based on this understanding, we can determine that the wheel should rotate in the direction opposite to the force exerted by the blade on the water. In other words, the wheel should rotate in a clockwise (CW) direction.
Therefore, the correct answer is: The wheel should rotate in a clockwise (CW) direction because the force exerted on the water by the blade is in the direction opposite to the force exerted by the blade on the water.