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Problem #6 A rectangular key is used to connect a shaft of diameter d = 30 mm to a pulley. The key (see image) has a width of w = 10 mm, height of h = 6 mm, and length of L = 30 mm (into the page). The system is subject to a time-varying torque (T) that leads to the following forces on the key: Fmin = 40 kN and Fmax = 60 kN.   (a) What are the alternating and mean shear stresses of the key? Note: You do not have to find the von Mises effective stresses. Express your answer in MPa.

Problem #4 (continued) A bearing with a diameter of 30 mm and length of 25 mm has a diametral clearance of cd = 45 μm. Consider lubrication with an oil that has an absolute viscosity of η=16 cP (recall that 1 cP = 10-3 Pa⋅s). Utilize a design load of P = 7.2 kN, a rotational speed of 1500 rpm, and an Ocvirk number of ON = 30 for the bearing.   (b) What is the stationary torque, Ts? Express your answer in N-m.

15 extra minutes has been provided to allow you to upload your work for the exam to facilitate partial credit. If you have trouble uploading your work directly to the exam, you can email Dr. Diaz a scanned copy of your work (nancyd1@usf.edu) immediately following the submission of your exam.

Problem #4 A bearing with a diameter of 30 mm and length of 25 mm has a diametral clearance of cd = 45 μm. Consider lubrication with an oil that has an absolute viscosity of η=16 cP (recall that 1 cP = 10-3 Pa⋅s). Utilize a design load of P = 7.2 kN, a rotational speed of 1500 rpm, and an Ocvirk number of ON = 30 for the bearing.   (a) What is the no-load torque, To? Express your answer in N-m.

In 3-5 sentences, summarize one of the papers you presented as a textbook update.

A nurse reviews labs for a client with suspected anemia. Which lab confirms iron-deficiency anemia?

What paraphilia is relatively common, and involves urges or fantasies about exposing one’s genitals to strangers in order to cause shock in the observer.

After recent problems in launching a new product, managers have determined that the primary issue that their company is struggling with is coordinating the integration of new technologies and product features in response to changing market demand. Their perspective reflects an approach based on which of the following metaphors?

A major challenge in creating a learning organization is:

Frederick Taylor was a mechanical engineer who fixated on efficiency. Which metaphor most closely reflects his views?