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Repeat Problem 2.18 where the motor develops a torque of 200 lb-in. during operation.
Problem 2.18
The motor shown operates at constant speed and develops a torque of 100 lb-in. during normal operation. Attached to the motor shaft is a gear reducer of ratio 5:1, i.e., the reducer output shaft rotates in the same direction as the motor but at one-fifth motor speed. Rotation of the reducer housing is prevented by the "torque arm," pin-connected at each end as shown in Figure P2.18. The reducer output shaft drives the load through a flexible coupling. Neglecting gravity and friction, what loads are applied to
(a) the torque arm,
(b) the motor output shaft, and (c) the reducer output shaft?
Determine the plastic moment MP for a beam having the cross section shown in the figure if σY= 210 MPa.
The nominal inside diameter of the ring is 1.000 in and its outside diameter = 2.500 in. Using a safety factor = 2.0, determine the maximum interference that should be used with this assembly.
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