Homework Help for Mechanical Engineering

For an entropy value of 0 kJ/kg-K what would be the value of the corresponding enthalpy?

Please answer a, b, c

 _____________ determines how much, how long, and when the valves open.

please draw in autocad and share .dwg file as well

A cylindrical sample is subjected to axial compression: Vertical axial compressive stress (σa) parallel to the length of the core is 
taken to higher level. Using the Mohr Stress diagram, calculate the values of normal stress and shear stress a =1500kpa and b=500kpa and 60

A force Q is directed from a point A(4,1,4) meters towards a point B (-3,4,1) metres.Determine the moment of force P about x and y axis if it produces a moment of 1000Nm about z axis.

Consider the beam in Figure.5, assume material Yuang’s modulus E Gpa = 210 and 4 2 A m = × 4.0 10 , the inertia I to be constant throughout the beam, A force of 200N and a moment 500N.m are applied to the beam at mid-length. The left end is fixed support and the right end is pin support.
(1) please discretize the beam into two elements with node 1-3;
(2）obtain the global stiffness matrix
(3)obtain the nodal displacement and unknown rotations at middle nodal.

How the engine works?

In what part of the engine increase the speed of a truck?

Find the force required to move a load of 30N up a rough inclined plane, applied parallel to the plane. The inclination of the plane is such that when the same body is kept on a perfectly smooth plane inclined at an angle, a force of 6N applied at an inclination of 30" to the plane keeps the same in equilibrium. Assume coefficient of friction between the rough plane and the load is equal to 0.3.

A rough inclined plane, rises 1cm for every 5 cm along the inclined length. Calculate the effort required to drag a body weighing 100N up the plane, when the effort is applied parallel to the plane (µ=0.25)

A uniform bar of weight 30 N and length 4m passes over a prop and is supported in a horizontal position by a force of 10 N acting vertically upwards at the other end. Find the distance of the prop from the center of the bars.

5. Determine the (a) average shear stress developed in each 3/4 inch diameter bolt, (b) the bearing stress developed in each plate if 1* is the thickness of the plate, and (c) the maximum tensile stress if the width of the plate is 5*.