Problem

A cylindrical acetal polymer bar 20 cm long and 1.5 cm in diameter is subjected to a vibra...

A cylindrical acetal polymer bar 20 cm long and 1.5 cm in diameter is subjected to a vibrational load at one end of the bar at a frequency of 500 vibrations per minute, with a load of 50 N. How many hours will the part survive before breaking? (See Figure)

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