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A pin-connected structure consists of a rigid beam ABCD and two supporting bars. Bar (1) is an aluminum alloy [E = 70 GPa] with a cross-sectional area of A1 = 2,400 mm2. Bar (2) is a bronze alloy [E = 100 GPa] with a cross-sectional area of A2 = 6,000 mm2. All bars are unstressed before the load P is applied; however, there is a 3-mm clearance in the pin connection at A. If a load of P = 795 kN is applied at B, determine the normal force in bar (1).
two wooden members shown which support a 3.6 kip load are joined by plywood splices fully glued on the surfaces in
A particle which movies in a two-dimensional curvilinear motion has coordinates in millimetres which vary with time t in seconds according to x=5t2 +4 and y=2t3 + 6. For time t =3s, determine the radius of curvature of the particle path and the magni..
refrigerant r-134a with a mass of 0.08 kg is expanded adiabatically from a superheated vapor at 10 bar 40 c to a
a rectangular sunk key 16mm x 12mm thick x 80mm long is required to transmit 1500kn-mm torque from 60mm
A fireclay brick cube, 10 cm in length is removed from a furnace where it was maintained at a temperature of 500 degrees C. The brick cube is then placed in ambient temperature conditions.
given that the relaxation time a is 177.46 days what is the activation energy of a rubber band if the pre-exponential
since dw tdl where w is work the basic equation for the internal energy of rubber is du tds tdl where t is the
consider an aorta that has a circular cross section with a diameter of 5mm and a length of 10cm. assume that the
refrigerant 134a enters a compressor operating at steady state as saturated vapor at -8 degress celcius and exits at a
Evaluate the values of ultimate tensile strength, yield strength, percent elongation, fractural strain, and Young's Modulus of the selected metals of aluminum when subjected to uniaxial tensile loading.
determine a) the angular accelerations of gears B and C, b) the accelerations of the points on gears B and C which are in contact when t = 0.5 s.
Given: In the average American household (2.59 persons per household), each family member takes a 7.5 minute shower every morning. The average flow rate through the shower head is 15L/min. Incoming city water at 15C is heated to 55C by an electric he..
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