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What does 'centripetal' mean in the context of physics?
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Centripetal refers to the force that acts on an object moving in a circular path, directing it towards the center around which it is moving.
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What is the formula used to calculate centripetal force?
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The formula for centripetal force is F = mv^2/r, where m is the mass, v is the velocity, and r is the radius of the circular path.
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What role does centripetal force play in circular motion?
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Centripetal force keeps an object moving in a circular path by acting perpendicular to the object's velocity, directing it towards the center.
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Is centripetal force a type of an actual force like gravity or tension?
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Centripetal force is not a distinct type of force. It is a result of several forces like tension, gravity, or friction that cause an object to follow a circular path.
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How does velocity affect centripetal force?
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Centripetal force is directly proportional to the square of the velocity. As velocity increases, the force required to maintain circular motion increases.
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Why is it that an object moving in a circle at constant speed is accelerating?
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An object in circular motion is accelerating because its direction is continuously changing, even if its speed remains constant.
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How does the radius of the circle affect centripetal force?
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Centripetal force is inversely proportional to the radius of the circle. A smaller radius requires a greater force to maintain the same speed.
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Can you name an example of centripetal force in real life?
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A real-life example is a car turning around a circular track where the friction between the tires and the road provides the centripetal force.
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What happens if the centripetal force is removed?
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If centripetal force is removed, an object will move off in a direction tangential to the circular path due to inertia.
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What distinguishes centripetal from centrifugal force?
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Centripetal force is the actual force acting towards the center keeping an object in circular motion, while centrifugal force is a perceived force that seems to push the object outward, observed in a rotating reference frame.
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How does mass influence the centripetal force required for circular motion?
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Centripetal force is directly proportional to mass; larger mass requires a larger force to maintain circular motion at the same speed.
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What happens to centripetal force if the speed of the object is doubled?
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If the speed of the object is doubled, the centripetal force required becomes four times greater because force depends on the square of the speed.
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Why does a satellite orbiting Earth require centripetal force?
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A satellite requires centripetal force to keep it in orbit, which is provided by the gravitational pull of the Earth.
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What provides the centripetal force for planets orbiting the sun?
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The gravitational pull of the sun provides the centripetal force necessary to keep planets in their orbits.
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Describe why a roller coaster experiences centripetal force during loops.
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During loops, the rails exert a centripetal force on the roller coaster to keep it moving in a circular path and overcome the outward force of inertia.
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