An engine of mass 150kg is supported on four springs, each of stiffness 25 kn/m. due to the engine not being correctly balanced, when it runs at 15 rev/s a periodic force with a maximum value of 300 n acts on the system. what will be the maximum value of the force on the foundations on which the springs rest due to the engine running if it can be assumed that the engine only vibrates in the vertical direction?

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Water at 55c flows across a flat plate whose surface temperature is held constant at 95c. if the temperature gradient at the plate's surface for a given value of x is 18 c/mm, find a) local heat transfer coefficient. b) heat flux

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