centrifugal force

Thân thiện

A child feels centrifugal force while spinning a bucket of water in a circle.

Definition

1. Noun:
   • A fictitious force that appears to act on a body moving in a curved path, directed away from the center of curvature: In physics, centrifugal force is the apparent outward force that seems to push an object away from the center of its circular path. It is not a fundamental force but an inertial effect observed from a rotating frame of reference.

Usage

• General Use: The term is used primarily in physics and engineering to describe the sensation or effect of being pushed outward when moving along a curve.
• Key Point: It is crucial to understand that centrifugal force is an or force, meaning it arises from the inertia of an object rather than from a physical interaction. The real force acting on an object in circular motion is the , which pulls it inward.

Examples

• Noun:
  • The centrifugal force felt by passengers in a turning car pushes them against the door.
  • In a centrifuge, centrifugal force separates substances of different densities.
  • When you swing a bucket of water in a vertical circle, centrifugal force helps keep the water from spilling out at the top.

Advanced Usage

• "Centrifugal force" in rotating frames: In a reference frame that is rotating with the object (a non-inertial frame), centrifugal force is treated as a real force to explain motion using Newton's laws.
  • From the perspective of someone on a merry-go-round, centrifugal force seems to push them outward.

Variants and Related Words

• Centripetal force (n): The real, inward-directed force that causes an object to follow a curved path. It is the force that counteracts the inertial tendency described by centrifugal force.
  • The tension in the string provides the centripetal force that keeps the ball moving in a circle.
• Centrifugal (adj): Moving or tending to move away from a center.
  • The machine uses a centrifugal pump to move the fluid.

Synonyms

• Apparent outward force: This phrase describes the perceived nature of centrifugal force without using the specific term.
• Fictitious force: A general term for forces that appear in non-inertial (accelerating) reference frames, including centrifugal force and the Coriolis force.

Related Phrases

• "To experience centrifugal force": To feel the sensation of being pushed outward due to circular motion.
  • Drivers experience strong centrifugal force on banked racetracks.

Học thuật

Noun

1. the outward force on a body moving in a curved path around another body