A 4 kg object moves in a horizontal circle of radius 0.5 m at a constant speed of 6 m/s. What is the centripetal force acting on it?
Answer and explanation
Correct answer: A. 288 N
- Step 1: Centripetal force .
- Step 2: N.
Answer
288 N.
Why not the others: 72 N: radius is multiplied instead of divided. 48 N: the speed is not squared. 144 N: a factor is added from the kinetic energy formula.
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