## Find the torque required to drive a 16-mm single-start square thread power screw with a 2 mm pitch.

1. Repeat problem 12-7 if everything remains the same except that the power screw has double square threads.

2.A 40-mm rotating power screw with triple square threads has a pitch of . The screw is to be used to lift a 22 kN load at a speed of 4 m/min. Friction coefficients for both the collar and threads have been determined to be . The mean thrust collar friction diameter is 70 mm. Determine the power required to drive the assembly.

3. Find the torque required to drive a 16-mm single-start square thread power screw with a 2 mm pitch. The load to be lifter is 3.6 kN. The collar has a mean friction diameter of 25 mm, and the coefficients of collar and thread friction are mc = 0.12 .

### Analyze the following situations and determine whether the federal court has jurisdiction under diversity of citizenship.

Analyze the following situations and determine whether the federal court has jurisdiction under diversity of citizenship. a. Brady and Jeffers, both citizens of North Dakota, wish to sue as a….

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Analyze the following situations and determine whether the forum state has personal jurisdiction. a. Review the Digicam, Inc. situation described in (d) of question 5. Based on the facts….

### Analyze the following factual situations and determine which, if any, cause of action exists.

Refer to Exhibit 3–3, Elements of Different Causes of Action. Analyze the following factual situations and determine which, if any, cause of action exists. a. Connors and Loewe enter into….