Adriver traveling in her 16-foot suv at the speed limit of 30 mph was arrested for running a red light at 15th and main, an intersection that is 60 feet wide. the driver claimed innocence, on the grounds that the traffic signals were not set properly. the yellow light was on for the standard 4 seconds. the suv driver's reaction time is assumed to be 1.5 seconds. comfortable deceleration is at a rate of 10 feet/second2. did a dilemma zone exist on this intersection approach? if so, how long was it? assume the vehicle must completely clear the intersection to avoid "running a red light." yes, d 63 ft. 7.

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.

Most leaks in reciprocating air compressors can be detected and minimized by: (clo4) a)-detecting leakage areas using ultrasonic acoustic detector. b)-tightening joints and connections c)-replacing faulty equipment d)-all of the given options