question_answer

A cyclist moves from a certain point\[x\]and completes one revolution around a circular path of radius 'r'. What is the distance travel led and magnitude of displacement of the cyclist?

Answer:

Let the cyclist start from point x.   Radius of circle ox = r (given) Distance covered by cyclist = Circumference of circle (once) \[=2\pi r.\] Initial position of cyclist \[=x.\] After one revolution, final position\[=x\] Since initial position and final position are same, displacement is zero.