7. A pilot pulls his airplane out of a steep dive. The airplane follows a circular trajectory of radius R and is moving with a speed of v = 180 m/s as the airplane crosses level flight at tife bottom of the circle. The ratio of the pilot's apparent weight to the pilot's true weight at the bottom of the circle is called the "number of g's" (#g) the pilot experiences. If the ratio of pilot's apparent weight to his true weight at the bottom of the circle is (#g) = 5.00, what is the radius R of the circle? Not to Scale! A) R=781m B) R=970m C)R=810'm D) R=776 m E) R827m