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A low-flying cropduster A is moving with a constant speed of 40 m/s in the horizontal circle of radius 300 m. As it passes the twelve-o'clock position shown at time t = 0, car B starts from rest from the position shown and accelerates along the straight road at the constant rate of 3 m/s2 until it reaches a speed of 30 m/s, after which it maintains that constant speed. Determine the velocity and acceleration of A with respect to B and plot the magnitudes of both these quantities over the time period 0 = t = 50 s as functions of both time and displacement B s of the car. Determine the maximum and minimum values of both quantities and state the values of the time t and the displacement s at which they occur
Cortical bone gets weaker with aging, but it turns out that diaphyseal diameters can also change with aging, particularly in males, such that the safety factor of the diaphysis is approximately constant with aging.
a 4-ft concrete post is reinforced with four steel bars each with a 34 in. diameter. knowing that e of steel 29x106 psi
a 6 nominal pipe size schedule 40 steel pipe has a chamfered entrance and 300 ft. long. the velocity is 20 ft per sec.
A 50-kg traffic signal is suspended by two 21-m cables which have a mass of 1.2 kg per meter of length. Determine the vertical deflection 8 of the junction ring A relative to its position before the signal is added.
In our stress calculation example, we had an array of rod diameters and wanted to calculate the normal stress in each rod when it is loaded by an axial load P of 1000 lbs. EDU stresscalc ?
what is the actual mechanical advantage of the system?
Two standard gears have a diametral pitch of 12 and a gear ratio of 7.0. The center distance is 8 in. Determine the number of teeth on each gear.
a 100 n cube slides down an inclined plane of 30 degrees with the horizontal. a fluid film of 0.2 mm thick separates
a spherical underwater instrument pod used to make soundings and to measure conditions in the water has a diameter of
a biomass fired furnace has an output of 6300 kw. it burns biomass that has a heating value of 8100 btulb. at what rate
a particle is moving along a straight line and has an acceleration of kv2 ms2 where v is the velocity of the particle.
A rigid well-insulated tank contains air
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