Rod 1 is made of steel, E1 = 210 GPa, α_1 = 12.5 x 10-6 °C-1, A1 = 30 cm2. Rod 2 is made of brass, E2 = 105 GPa, α_2 = 19 x 10-6 °C-1, A2 = 30 cm2. AB is a rigid member connected to a pin support at its center, and is horizontal initially. Then a load F = 50 kN is applied. To counteract deformations caused by the applied force, the temperature is also changed by ∆T to force AB to stay at its initial position. (a) Does the temperature of the system increase or decrease? (b) What is the magnitude of the temperature change ∆T?

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?

An electric kettle is made out of stainless steel, weighs two pounds (when empty) and is equipped with a heating element that consumes 2 kw of electricity. assuming that the water and the kettle are at the same uniform temperature at any moment of time, calculate the shortest possible time to bring 2 quarts of water from room temperature to the onset of boiling