A car 500 kg is travelling at a constant speed of 9 m/s round a curve of 100m. What is the centripetal force?
Correct answer: C. 405N
- A. 205N
- B. 305N
- C. 405N
- D. 505N
Explanation
The formula for centripetal force is Fc = mv²/r, where:m is the mass of the car (500 kg)v is the speed of the car (9 m/s)r is the radius of the curve (100 m)Plugging in these values, we calculate:Fc = (500 kg * (9 m/s)²) / 100 mFc = (500 kg * 81 m²/s²) / 100 mFc = 40500 kg⋅m/s² / 100 mFc = 405 NThis confirms that the correct answer is 405N. Other options are incorrect due to errors in calculation or incorrect application of the formula.
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