1,322 prompts matching "Proving the sum formula for a geometric progression"
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Worked Example: The common acceleration of two connected particles
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Show All Working: A lift, and the person standing in it
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Common Mistakes: What becomes of the tension when the string goes slack
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Worked Example: The normal reaction on a body resting on a smooth incline
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Explain Back: The angle of friction, and the coefficient of friction
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WAEC Prep: Limiting equilibrium, with a body on the point of sliding
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Show All Working: The angle at which a body just begins to slide
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Common Mistakes: The work done against friction on an incline
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Worked Example: The acceleration of a body moving round a circle at constant speed
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WAEC Prep: The conical pendulum
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Show All Working: A body in a vertical circle, and the tension at the top
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Worked Example: The amplitude, period and frequency of a simple harmonic motion
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Explain Back: The displacement written as x equals a sin omega t
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WAEC Prep: The simple pendulum as an example of simple harmonic motion
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Common Mistakes: The energy of a body in simple harmonic motion
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Worked Example: The tension in a stretched elastic string
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Explain Back: The elastic potential energy stored in a stretched string
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Show All Working: The work done in stretching an elastic string
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Common Mistakes: A particle oscillating on the end of an elastic string
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Structured question: binomial expansion used for a probability estimate
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