A 1000-kg car is moving at 30.0 m/s around a horizontal curve whose radius is 100 m. What is the magnitude of the frictional force required to keep the car from sliding?
A) 9000 N
B) 9810 N
C) 300 N
D) 900 N
E) 3000 N

Question

Quizplus · Accepted Answer

The frictional force required is the centripetal force, calculated using the formula $ F = \frac{mv^2}{r} $. Substituting the given values: $ F = \frac{1000 \times 30^2}{100} = 9000 \, \text{N} $.

A 1000-Kg Car Is Moving at 30