a 1500 kg car is driven around a circle of radius 120 m and at a speed of 26 m/s. calculate the magnitude of the centripetal force of the car. What real force keeps the car moving in a circle? the answer is not one of the four fundamental forces, but way one of those forces shows itself in real life.
Ac = v^2/r = 26^2/120
F = m Ac = 1500 * 26^2/120
friction force between the road and the tires. Think about what happens if it is icy.