Q
QuestionPhysics

Disc brakes work by: A. Stopping the drive axle. B. Pressing outward from a disc, to stop a drum from rotating. C. Stopping a disc inside the transmission. D. Pressing inward, on a disc, to stop it from turning.
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Answer

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Step 1:
Let me solve this systematically:

Step 2:
: Understand Disc Brake Mechanics

Disc brakes are a critical component in vehicle braking systems, designed to slow or stop wheel rotation by applying friction.

Step 3:
: Analyze the Mechanism

In a typical disc brake system: - A brake disc (rotor) is attached to the wheel - Brake pads are positioned on either side of this disc - When the brake pedal is pressed, brake calipers squeeze these pads - The pads press inward against the spinning disc - This friction creates resistance that slows or stops the wheel's rotation

Final Answer

Pressing inward, on a disc, to stop it from turning.