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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An amusement park
ride consists of airplane-shaped cars
attached to steel rods.
Each rod has a length of 15.0 m and
a cross-sectional area of 8.00 cm2.
The rods are attached to a frictionless
hinge at the top, so that the cars can
swing outward when the ride rotates.
(a) How much is each rod stretched
when it is vertical and the ride is at
rest? (Assume that each car plus two
people seated in it has a total weight of
1900 N.) (b) When operating, the ride
has a maximum angular speed of 12.0 rev/min. How much is the rod
stretched then?
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