To find the centripetal force acting on a car that is making a round turn, we can use the formula for centripetal force:
F = \frac{mv^2}{r}
where:
First, we need to convert the velocity from km/h to m/s:
v = 36 \, \text{km/h} = \frac{36 \times 1000 \, \text{m}}{3600 \, \text{s}} = 10 \, \text{m/s}
Now, we substitute the values into the centripetal force formula:
F = \frac{500 \times (10)^2}{50}
Simplifying this, we get:
F = \frac{500 \times 100}{50} = \frac{50000}{50} = 1000 \, \text{N}
Thus, the centripetal force acting on the car is 1000 \, \text{N}.
Therefore, the correct answer is 1000 \, \text{N}.