An amusement parkride consists of airplane-shaped carsattached to steel rods.Each rod has a length of 15.0 m anda cross-sectional area of 8.00 cm2.The rods are attached to a frictionlesshinge at the top, so that the cars canswing outward when the ride rotates.(a) How much is each rod stretchedwhen it is vertical and the ride is atrest? (Assume that each car plus twopeople seated in it has a total weight of1900 N.) (b) When operating, the ridehas a maximum angular speed of 12.0 rev/min. How much is the rodstretched then?

An amusement parkride consists of airplane-shaped carsattached to steel rods.Each rod has a length of 15.0 m anda cross-sectional area of 8.00 cm2.The rods are attached to a frictionlesshinge at the top, so that the cars canswing outward when the ride rotates.(a) How much is each rod stretchedwhen it is vertical and the ride is atrest? (Assume that each car plus twopeople seated in it has a total weight of1900 N.) (b) When operating, the ridehas a maximum angular speed of 12.0 rev/min. How much is the rodstretched then?

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