A mass moves in a circle of radius at a constant speed of . What is the centripetal force (in N)?

Answer and explanation

Correct answer: B. 16

  1. Step 1: State the formula for centripetal force in uniform circular motion: .
  2. Step 2: Substitute mass , speed , and radius : .
  3. Step 3: Calculate centripetal force: .
Answer
16.
Why not the others: The alternative options (4, 17, 32) omit the factor of in kinetic energy or confuse momentum with kinetic energy.

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