A horizontal beam of length $6$ meters and cross$-$sectional area $0\mathrm{.}1$ m$^2$ is subjected to a uniformly distributed load of $20$ kN$/$m$.$ Calculate the reactions at the supports, the maximum bending moment in the beam, and the maximum deflection at the center.A hydraulic cylinder has a piston diameter of $100$ mm and a rod diameter of $50$ mm$.$ If a force of $50$ kN is applied to the piston, calculate the pressure exerted on the piston and rod, the force exerted by the rod, and the extension of the rod if the modulus of elasticity for the material is $200$ GPa.A centrifugal pump operates at $1500$ rpm and delivers water with a density of $1000$ kg$/$m$^3$ at a flow rate of $0\mathrm{.}02$ m$^3/$s$.$ If the pump head is $20$ meters, calculate the power developed by the pump, the efficiency of the pump if the brake power is $5$ kW$,$ and the specific speed of the pump.An air compressor compresses air from $1$ bar and $25$C to $8$ bar. Calculate the work done during compression, the heat transfer during compression if the compressor efficiency is $80\%,$ and the final temperature of the air assuming ideal gas behavior.Calculate the velocity of a fluid flowing through a pipe of diameter $0\mathrm{.}2$ m and length $10$ m if the flow rate is $0\mathrm{.}1$ m$^3/$s$.$ Determine the Reynolds number for the flow and the friction factor using the Darcy$-$Weisbach equation.

What is meant by encapsulation in oops?