Calculate the load factor in the following cases:

A$.$ An aircraft executes a horizontal loop of radius $1\mathrm{.}0km$ with a steady speed of $900km/$h$.$

$8.$ At the bottom, at the top, and at the middle of a loop of radius $R=500m,$ when an alreraft, mass of $70kg.$ loops the loop at a constant velocity, v$,$ of $360k$m$/$h$.$