Physics, 31.10.2019 03:31 NeemIsGreen
Amass of 1000 kg drops from a height of 10 m on a platform of negligible mass. it is desired to design a spring and dashpot on which to mount the platform so that the platform will settle to a new equilibrium position 0.2 m below its original position as quickly as possible after the impact without overshooting. find the spring constant k and the damping constant b of the dashpot. be sure to examine your proposed solution x(f) to make sure that it satisfies the correct initial conditions and docs not overshoot. find, to two significant figures, the time required for the platform to settle within 1 mm of its final position.
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Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)
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Amass of 1000 kg drops from a height of 10 m on a platform of negligible mass. it is desired to desi...
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