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Two equal-length springs are nested together in order to form a shock absorber. If it is designed to arrest the motion of a 2kg. mass that is dropped s=.5m above the top of the springs from an at-rest position, and the maximum compression of the springs is to be .2m., determine the required stiffness of the inner spring kb, if the outer spring has a stiffness ka=400N/m.
Why does the definition of NPSH include the dynamic head of the fluid? Isn't cavitation based only on the difference between the static head and the local vapor pressure?
a base for a building column measures 18.0 in by 18.0 in on a side and 12.0 in high. compute the cross-sectional area
Submit yield surface, stress-ratio and r-value plots including EXP, von Mises, Hill (1948)-M1, and Hill (1948)-M2 - Strain-based forming limit for three options
Determine the maximum speed at which the car with mass m can pass over the top point A of the vertical curved road and still maintain contact with the road.
Calculate the ultimate tensile strength (engineering) of a material whose strength coefficient is 700 MPa and a tensile test specimen which necks at an engineering tensile strain of 0.35.
Calculate the mass flow (in slugs/per second) that comes out the exit of the engine. The plane is at standard altitude 50,000 ft and velocity = 2200 ft/s. Would appreciate attack to problem.
(a) Sketch the cycle on a p V diagram. (b) Calculate the net work for the cycle, in kJ. (c) Calculate the heat transfer for process 2 3, in kJ. (d) Calculate the heat transfer for process 3 1, in kJ. (e) Is this a power cycle or a refrigeration cy..
a hydraulic press is powered by a remote high-pressure pump. the gage pressure at the pump outlet is 22 mpa whereas the
A 10-kg mass slides down a ramp inclined at 30o from the horizontal a total vertical distance of 3 m. Determine the velocity of the mass when it reaches the bottom, neglecting friction and air resistance.
a 1-m3 rigid tank initially contains air at 150 kpa 300 k. the tank is connected through a valve to a supply line at
Consider a 70-kg woman who has a total foot imprint area of 400 cm2. She wishes to walk on the snow, but the snow cannot withstand pressures greater than 0.5 kPa. Determine the minimum size of the snow shoes needed.
A large stationary Brayton cycle gas-turbine power plant delivers a power output of 100MW to an electric generator. The minimum temperature in the cycle is 300K
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