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Figure 2.82 shows a metal block supported on two identical cylindrical rollers rotating in opposite directions at the same angular speed. When the center of gravity of the block is initially displaced by a distance x, the block will be set into simple harmonic motion. If the frequency of motion of the block is found to be determine the coefficient of friction between the block and the rollers.
the water side of the wall of a 70-m long dam is quarter circle with radius of 7-m. determine the hydrostatic force on
air in the atmosphere is composed of primarily nitrogen oxygen and argon. the mole percents of the compounds are as
water at 20 bar 400oc enters a turbine operating at steady state and exits at 1.5 bar. stray heat transfer and kinetic
For diffusion of Cu into Al at 1000 K for 10 hours, calculate the distance into the material at which the concentration of Cu will be 5% if the initial concentration of Cu in the Aluminium was 0.5% and the surface concentration during diffusion was 5..
Neglecting radiation and assuming steady-state conditions, calculate the surface temperature of the droplet if the ambient air temperature is 300 K. The latent heat of vaporization is 8.42 X 105 J/kg.
determine the maximum power that can be transmitted thru a stepped shaft rotating at 60 hz. knowing the radius of the
Detemine if the ball bounces down the steps without skipping any step and if the ball bounces down the steps without bouncing twice on the same step.
a 2.5 hp motor is used to move an 200lbf object across a horizontal surface at a velocity of 22 fts in a time period of
A converging-only nozzle has an efficiency of 96%. Air enters with negligible velocity at a pressure of 150 psia and a temperature of 750°R. The receiver pressure is 100 psia. What are the actual outlet temperature, Mach number, and velocity?
Water enters a boiler at 160 psia as a saturated liquid and leaves at 600 degree F at the same pressure. Calculate the heat transfer per unit mass of water.
a 500w cylindrical resistance heater is 1m long and 0.5cm in diameter. the resistance wire is placed horizontally in
Estimate the average pressure C in the seal area of design (a) and the average increase T in the initial tension in each of the 16 bolts of design (b).
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