Circular motion.................?

Question

why does a passenger leans torward the center of the circle when the car goes raound a curve?

Answer 1

The car tilts outwards at the curve and the passenger/s tilt towards the centre of the circle to mantain the 90 degrees against the forces that act on them. Car on the curve has the forces acting outwards of an angle about 70degrees so this is just an automatic reaction.

Even if it is a sports car that does not tilt on corners, the passenger/s will still act to diminish the force to mantain fixed centre of their gravity.