A5/8-in.-diameter steel rod ab is fitted to a round hole near end c of the wooden member cd. the ultimate strength of the wood used is 8 ksi in tension and 1 ksi in shear, while the ultimate shear strength of the steel is 22 ksi. determine (a) the factor of safety for the pin, (b) the average bearing stress in the wood, (c) the required value of b if the factor of safety for the wooden member in shear is 3.0, (d) the maximum average normal stress in the wood.

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.

Tom is having a problem with his washing machine. he notices that the machine vibrates violently at a frequency of 1500 rpm due to an unknown rotating unbalance. the machine is mounted on 4 springs each having a stiffness of 10 kn/m. tom wishes to add an undamped vibration absorber attached by a spring under the machine the machine working frequency ranges between 800 rpm to 2000 rpm and its total mass while loaded is assumed to be 80 kg a) what should be the mass of the absorber added to the machine so that the natural frequency falls outside the working range? b) after a first trial of an absorber using a mass of 35 kg, the amplitude of the oscillation was found to be 10 cm. what is the value of the rotating unbalance? c) using me-3.5 kg.m, find the optimal absorber (by minimizing its mass). what would be the amplitude of the oscillation of the absorber?

Which of the following is the most important advantage of a large field of view? a. allows larger areas to be examined b. relieves eyestrain c. minimizes parallax errors. d. increases precision in proportion to the in- crease in field of view