Specify a parallel key for a gear to be mounted on a shaft with a 2.00 in diameter. the gear transmits 21000 lb. in of torque and has a hub length of 4.00 in. use sae 1035 steel for the key and assume that the key material is weakest when compared with the shaft and hub materials. if sae 1035 steel is not suitable you can use stronger steel by specifying it.

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All this is to say that new technologies develop quickly and continuously, and society is used to and adapts quickly to these constant innovations. ... Medical technology is always improving, leading to lower infant mortality, cures for diseases, and many more improvements in quality of life.

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