Question

# A.Why does a rolling bicycle have greater stability than one at rest? B.When riding a bike...

A.Why does a rolling bicycle have greater stability than one at rest?

B.When riding a bike at a normal speed, you know how to turn right/left by tilting your center of gravity toward right/left. Explain the underlying physical mechanism.

A. A rolling bicycle wheel is the actual reason for stability . Cause is due to gyroscopic effect . when wheel is rotating if the cycle is tilting to any of the sides , it will cause precession angular velocity and a stabilizing reaction torque will stop it from tilting.

B. When we tilt to left for example , as we are about make a turn in circular arc a centrifugal force will act to right direction balancing the bike from falling in left direction and also friction will help from falling. so here there are three forces. Force due to gravity to left because of tilting , centrifugal force to right and additionally frictional force. so these three forces balance each other to give stability while turning.