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Estimate the torque required at the base of a flag pole to hold it in place in a 30mph wind. Assume the flag pole is a vertical cylinder with D=10cm and L=10m, and assume the wind drag force is uniform along the pole. ( if needed, use air density(p)=1.2kg/m^3, µ=1.8*10^(-5)Pa*sec; water properties:p=10^3 kg/m^3, µ=10^(-3)Pa*sec)
the motion of the slender 10kg rod AB is guided by collars of negligible mass that slide freely on the vertical and horizontal rods. knowing that the bar is released from rest when θ=30, determine the velocity of the collars A and B when θ = 60.
Working with boiler suspension bolts. An HRT boiler is 4766mm long and 3533mm in diameter. It has 66 steel tubes with a diameter of 9mm. The total dry weight of the boiler is 2.565 tonnes
two 20mm steel plates are welded to a rolled S section as shown. Determine the moments of inertia and the radii of gyration of the combined section with respect to the centroidal x and y axes.
Calculate reactions of a simply supported continuous beam. A beam is simply supported at the ends and is continuous over two spans.
Lift coefficient (Cl) and lift (L), An airfoil of surface area 1ft squared is tested for lift (L) in a wind tunnel. At an angle of attack of 5 degrees with standard air of density 0.0024 slugs/ft cube at a speed of 100 ft/sec
Design Engineering: Find Specific Load and Heat Generated Per Minute, A load of 6400 Kg is carried by a journal rotating in a 270 mm bearing diameter and 400 mm long. Find the specific load on the bearing and the heat generated per minute in the b..
Determine the temperature of the electric heater element and drawing of the temperature profile.
Determine the velocity of shearing along the shear plane and the velocity of sliding at the tool-chip interface and find the work done per minute in shearing the metal and against the friction.
Design Problem - Piston and Flywheel : Analyze the motion of the crankshaft AB and flywheel for 0 ≤ θ ≤ 4Π (two complete rotations of the crankshaft, or all four cycles, beginning and ending at TDC), for different values of the four design paramete..
Package Design Brief: Assume you are the packaging engineer for a large consumer products company. In this company, the Packaging Design Briefs are initiated by the marketing group and forwarded to the Package Engineering group.
A short post AB has a commercially manufactured eyebolt screwed into its end. Three cables attahced to the eyebolt apply forces shown.
Find graphically the forces f1 and f2 in the crane. The triangle is standing up with a 90 degree angle next to the wall on top, with f1 pointing towards it
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