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A 500 kg car takes a turn of radius 50 m with a speed of 36 km/h. The centripetal force acting on the car will be:

1. 1200 N
2. 1000 N
3. 750 N
4. 250 N

Correct answer: 1000 N

Solution

The car’s speed is 36 km/h = 10 m/s. Centripetal force is $F=\frac{mv^2}{r}=\frac{500\times 10^2}{50}=1000$ N.

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