The airplane is at the beginning of its takeoff run. Its weight is 1000 lb, and the initia...

The airplane is at the beginning of its takeoff run. Its weight is 1000 lb, and the initial thrust T exerted by its engine is 300 lb. Assume that the thrust is horizontal, and neglect the tangential forces exerted on the wheels.

(a) If the acceleration of the airplane remains constant, how long will it take to reach its takeoff speed of 80 mi/h?

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(b) Determine the normal force exerted on the forward landing gear at the beginning of the takeoff run.