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1.For the pinned frame below subjected to a 500 kN lateral force, what are the internal forces in each member?
2.For a design allowable tension stress of 140 Mpa and a design allowable compression stress of 100 Mpa, what is the required cross sectional area of each member?
3. The structure is assembled at 70 F and then heated to 300 F. What is the axial thermal stress and strain in AB if the structure is made out of wood (CTE= 0.000020/degF) or aluminum ?
4. Lets design the members if they are made of wood(compression and tension design strength = 5000psi) or aluminum . Do not use any safety factors. Can you use any of the wood or aluminum pieces shown below.
A box slides across a frictionless floor with an initial speed v = 3.4 m/s. It encounters a rough region where the coefficient of friction is µk = 0.5. with what speed does the box leave the strip
Battery-powered electricity is very expensive compared with that available from a wall receptacle. Estimate the cost per kWh of an alkaline D-cell
An object is placed in front of a concave mirror with a 21.4-cm radius of curvature. At what distance is the object from the mirror
Digital bits on a 12.0-cm diameter audio CD are encoded along an outward spiraling path that starts at radius R1=2.5cm, Determine the total length of the spiraling path
a little girl and her father are both playing on a merry go round in the park. what is the average angular velocity of the father
A 60kg pole vaulter running at 13m/s vaults over the bar. Her speed when she is above the bar is 0.7m/s. Neglect air resistance, as well as any energy absorbed by pole, and determine her altitude as she crosses the bar.
Suppose a star with radius 8.36 108 m has a peak wavelength of 692 nm in the spectrum of its emitted radiation. What is the surface temperature of the star
Universal beam section: bending moment, maximum stress, radius of curvature, A universal beam section has a second moment of area about its neutral axis of 6487 cm4 and its overall depth is 305 mm
Two identical spheres are made of conducting material. Initially, sphere 1 has a net charge of 33Q and sphere 2 has a net charge of -18 Q
Two converging lenses (f1 = 8.50 cm and f2 = 5.90 cm) are separated by 17.4 cm. The lens on the left has the longer focal length. Locate the final image relative to the lens on the right
A large tank is filled with methane gas at a concentration of 0.690 kg/m3. The valve of a 2.00-m pipe connecting the tank to the atmosphere is inadvertantly left open for 11.0 hours. determine the cross-sectional area of the pipe
Magnetic resonance imaging (MRI) is a medical technique for producing "pictures" of the interior of the body, Determine the smallest time period during which the field can be allowed to vanish if the magnitude of the average induced emf is to be kep..
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