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The rigid gate,OAB, of Fig. P2.58 is hinged atO and rests against a rigid support atB. What minimum horizontal force,P, is required to hold the gate closed if its width is 3 m? Neglect the weight of the gate and friction in the hinge. The back of the gate is exposed to the atmosphere.
what are the properties of petrol that it makes particularly suitable for the use as afuel in a motor vehicle.
A construction crew lifts approximately 560 lb of material several times during a day from a flatbed truck to a 32 ft rooftop. A block and tackle system with 50 lb of effort force is designed to lift the materials.
Describe on your own words the three strengthen mechanism for metals (i.e. grain size reduction, solid solution strengthening and strain hardening). Be sure to explain how dislocations are involved in each of the strengthening techniques.
A trapezoidal channel made out of brick, with bottom width 6ft and with bottom slope 0.001
Find the desired radius and mass of the absorber if the absorber is to not exceed an angular deflection amplitude of 30 degrees when the engine is running at 750 rpm.
Cracks propagate when the stress intensity factor exceeds a critical value and describe the fracture behaviour of the insulation tape loaded with a small crack.
what is the specific heat of air in US customary units given that its value in SI units is approximately 1 kN.m/kg.K?
Estimate the torque required at the base of a flag pole to hold it in place in a 30mph wind. Assume the flag pole is a vertical cylinder with D=10cm and L=10m, and assume the wind drag force is uniform along the pole.
Calculating a Constant Pressure Process, In a constant pressure, nonflow process, 6Btus of heat are added to a gas while the volumes change from 1.6ft^3 to 2.0ft^3
If the maximum temperature in the cycle is not to exceed 2200 K, determine the thermal efficiency and the mean effective pressure.
(a) Find the angular velocity of link CD and the velocity of the pin relative to the slot in link CD. (b) Find the angular acceleration of link CD and the acceleration of the pin relative to the slot in link CD.
a solid object of aisi 302 steel at a temperature of 850?c is quenched in mineral oil at a temperature of 25?c. the oil
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