Plain-English Meaning
Any object in circular motion requires a net inward force called centripetal force.
Mechanics questions usually become easier once you identify whether the problem is about force balance, kinematics, energy, or conservation.
Deeper Explanation
Any object in circular motion requires a net inward force called centripetal force.
Worked Example
Problem: A 0.5 kg ball moves in a circle of radius 1.2 m at 3 m/s. What centripetal force is required?
- F_c = mv²/r
- F_c = 0.5 × 9 / 1.2
- F_c = 3.75 N
Result: 3.75 N
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At A Glance
Category: Mechanics
Levels covered:
Best use: Start with the formula meaning, then move to the worked example and quiz so the equation turns into a tool instead of a memorised line.