Reference no: EM131164276
Problem 1: A tractor is moving slowly over a bridge, as shown in figure given below. The forces exerted on the bridge by the tractor are 4050 lb by the rear wheels and 1010 lb by the front wheels. Determine the position x of the tractor for which the bending moment in the beam is maximum.
Problem 2: The motor shown in the following figure supplies a torque of 380 lb.ft to shaft BCD. The torques removed at gears C and D are 220 lb.ft and 160 lb.ft, respectively. The shaft BCD has a constant diameter and is made of 0.4% C hot-rolled steel with an allowable shearing stress of 15 ksi. The angle of twist between B and D cannot exceed 3.0o. Each of the segments BC and CD of the shaft has a length of 4 ft. Determine
(a) The minimum permissible diameter of the shaft, if shafts are available with diameters in increments of 1/8 in.
(b) The diameter of the bolts used in the coupling, if eight bolts are used, and the allowable shearing stress for the bolts is 7000 psi. The diameter of the bolt circle is d1 = 3.5 in., and bolts are available with diameters in increments of 1/16 in.
Problem 3: A cold-rolled steel tension bar AB and a structural steel (E = 29,000 ksi, and σy = 36 ksi) compression strut BC are used to support a load P = 100 kip, as shown in the following figure. Assume that the pins at B and C offer no resistance to bending about the x-axis but provide end conditions which are essentially fixed at C and free at B for bending about the y-axis. Select the lightest structural steel section (use structural Tees) that can be used for strut BC. Use Code 1.
Note: structural tees are not listed in your textbook. It is your responsibility to look up information on this type of beams.
|
Gain power and influence in organization
: As pointed out in our lecture last week, we each should be seeking to gain power and influence in our organization. This can be done by developing knowledge and skill to point to becoming an expert.
|
|
Position on the issue of parallel imports
: What should be the government's position on the issue of parallel imports? Should the government take any particular actions?
|
|
How do you recommend that nancy prioritize the change
: The client management software system will need to be modified to incorporate the special client arrangements that are associated with the acquired firm. How do you recommend that Nancy prioritize these change requests for the client/management sy..
|
|
Internal strengths and weaknesses
: Colleges and universities, like all business, have strengths, weaknesses, and competitors. What would you consider to be an online university's internal strengths and weaknesses?
|
|
Detrmine the minimum permissible diameter of the shaft
: The motor shown in the following figure supplies a torque of 380 lb.ft to shaft BCD. Determine the minimum permissible diameter of the shaft, if shafts are available with diameters in increments of 1/8 in
|
|
May need to rethink business strategy
: The newspaper industry is one that may face extinction. Explain why they may need to rethink their business strategy, and provide some advice on possible strategic management changes. Be specific to include goals/objects, strengths, and weaknesses
|
|
How informational strategy could be use to motivate adoption
: Discuss how an informational strategy could be used to motivate adoption of the new system at Sky View Aerial Photography. How a political strategy could be used to motivate adoption of the new system at Sky View Aerial Photography.
|
|
Product to target market in the country
: If Coke was to re-enter into the Cuba Market. What entry mode strategy should the company choose and why? How would you market the product to your target market in the country? (Think of themes, branding, names, packaging, and advertising)
|
|
Assignment-marketing strategy implementation
: Determine any strategic partnerships the department store chain could develop that would help promote the higher-ranged-priced products and support the expansion in the west coast.
|