Answer to Question #141539 in Mechanics | Relativity for Jacusi

Question

When a girl rides round the corner on her bicycle at a steady speed (A) there is no force when she turns (B) the force on her bicycle is only her weight when she turns (C) the centripetal force is due to the tyre friction at the ground (D) the force on the girl is always outwards (E) she stays upright (vertical)

Answer 1

The only possible choise is (C).

(A) is not possible, since there are always forces acting on the bodies on earth.

(B) is not possible, since there at least normal force acting on the bicycle.

(D) since she is moving along the circle trajectory, the force should be inward.

(E) she must lean to the side in order to keep balance.

Answer. (C).