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The company you work for makes the casting for the rectangular pan (300 mm long x 200 mm wide x 60 mm deep with a 3 mm thick walls and base). The handles are added in a secondary process. A new model (400 x 250 x 70 mm) with 4 mm wall thickness is in design. 1. Assume n=2 and estimate the relative solidification time compared to the current model (show work) 2. The sales director wants to "modernize the design by making all the corners "sharp" and the walls "flat". Is that a good idea? Why?
A steel alloy to be used for a spring application must have a modulus of resilience of at least 2.07 MPa (300 psi). What must be its minimum yield strength?
Calculate spring coefficient k = P/δ and discuss the design on how much spring radius r should be changed to increase k two times
in an article on tire maintenance it is stated that tires lose air over time and pressure losses as high as 90 kpa 13
the traveling crane consists of a 5-m-long beam having a uniform mass per unit length of 20kg/m. The chain hoist and its supported load exert a force of 8 kN on the beam when x=2m. draw the shear and moment diagrams for the beam.
Your engineering firm decides to build a prototype, and needs screw and nut fasteners as well as resistors and LEDs. There are machinists and electronics technicians available for in-house production. What is the most cost-effective way of acquiri..
Two kilograms of air within a piston-cylinder assembly execute a carnot power cycle with maximum and minimum temperatures of 750k and 300k, respectively.
a 5 ft3 tank containing steam at 14.7 psia 1 quality is fitted with a relief valve. heat is transferred to the tank
a clock is slow such that it falls behind 15.2 min in every hour. calculate the angular velocity of its second hand the
the walls of an insulated lunch box are made of inch-thick styrofoam with a thermal conductivity of 0.05wmk. if an ice
water flows through a pipe at an average temperature of t70degc. the inner and outer radii of the pipenbspare r16cm and
large cylindrical bales of hay used to feed livestock in the winter months are d2m in diameter and are stored
A 0.7-lb block rests on top of a 0.5-lb block supported by but not attached to a spring of constant 9 lb/ft. The upper block is suddenly removed. Determine (a) the Maximum velocity reached by the 0.5-lb block, (b) the maximum height reached by the..
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