Two identical airplanes are executing identical turns around a pylon.One of them is moving at 200 mph,and the other is moving at 100 mph.The centripetal force acting on the airplane moving at 200 mph is __________ the value of the centripetal force acting on the airplane moving at 100 mph.
A)one quarter
B)one half
C)the same as
D)twice
E)four times

Question

Quizplus · Accepted Answer

Centripetal force is proportional to the square of the velocity. Therefore, if the speed doubles, the centripetal force increases by a factor of four.

Two Identical Airplanes Are Executing Identical Turns Around a Pylon