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Two slender rods of negligible weight are pin-connected at C and attached to blocks A and B, each of weight W. Knowing that θ= 80° and that the coefficient of static friction between the blocks and the horizontal surface is 0.30, determine the largest value of P for which equilibrium is maintained.
saturated water vapor at 300 kpa undergoes an isothermal process in a closed system until it becomes a saturated
An electric motor draws a current of 10 amps with a voltage of 110 V. The output shaft develops a torque of 9.7 N*m, a rotational speed of 1000 rpm, and operates at a steady state.
a particular road vehicle weighs 4000 lb. using the quarter-car model determine a suitable value for the suspension
oil with a kinematic viscosity of 0.0035ft3s flows through a 4-in-diameter pipe with a velocity of 15fts. what will be
Hookes Law (Stress equals Young’s Modulus times Strain; or s=Ee) is valid for both linear tensile behaviour and torsion (or shear) as well (e.g. t=Gg). Imagine a shear test of annealed, mild steel (e.g. AISI 1020). It is sheared until it just starts ..
It is necessary to select a metal alloy for an application that requires a yield strength of at least 310 MPa (45,000 psi) while main- taining a minimum ductility (%EL) of 27%. If the metal may be cold worked, decide which of the following are can..
A 10-hp, 230-V shunt-wound motor has a rated speed of 1,000 r/min and full-load efficiency of 86 percent. Armature-circuit resistance is 0.26 Q; field-circuit resistance is 225 Q. If this motor is operating under rated load and the field flux is v..
A large tower is to be supported by a series of steel wires; it is estimated that the load on each wire will be 13,300 N (3000 lbf). Determine the minimum required wire diameter, assuming a factor of safety of 2 and a yield strength of 860 MPa (12..
a garden hose is open at one end and capped closed at the other. a swimmer in an above-ground pool fills the hose with
two reversible power cycles are arranged in series. the first cycle receives energy by heat transfer from a reservoir
Describe the challenges for fabricating ceramic matrix composites as well as the corresponding resolving methods
A pump operating at steady state takes in saturated liquid water at 65 lbf/in.2 at a rate of 10 lb/s and discharges water at 1000 lbf/in.2 The isentropic pump efficiency is 80.22%. Heat transfer with the surroundings and the effects of motion and ..
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