Nano PHYSICS . MECHANICS . DYNAMICS . CIRCULAR MOTION

Centripetal Force Requirement

Net inward force must satisfy the radial requirement. It is not a new kind of force; it is the net radial force.

Physics · Mechanics · Dynamics · Circular Motion · Centripetal Force Requirement
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Unsigned visitors can show & copy prompts for Steps 1-3. Signed-in free accounts can also Run with AI for Steps 1-2. Paid accounts unlock everything (Steps 1-6 + Help prompts + AI).
Steps 1-3 Free Steps 4-6 Paid
STEP 1
Orient: apply the radial force requirement
Free
Establish circular motion as Newton's Second Law applied in the radial direction.
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Goal: explain centripetal force as a net inward force requirement, not a new interaction.
STEP 2
Conceptual grounding: build the circular-motion model
Free
Build a radial free-body-diagram workflow using real forces only.
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Goal: identify the real forces that contribute to the radial net force.
STEP 3
Real-world connection: identify radial force and motion
Free
Apply the requirement to strings, friction, gravity, and normal-force components.
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Goal: write and interpret the radial force equation.
STEP 4
Check your understanding: diagnostic mini-quiz
Paid
Attempt each question before revealing the circular-motion reasoning.
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Goal: identify and correct direction, force-source, component, and constant-speed errors before they become algebra errors.
STEP 5
Practice: solve increasingly rich circular-motion situations
Paid
Apply the model to circular-motion scenarios that grow in complexity.
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Goal: produce clear, physically justified circular-motion solutions.