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Two 8-kg blocks A and B resting on shelves are connected by a rod of negligible mass. Knowing that the magnitude of a horizontal force P applied at C is slowly increased from zero, determine the value of P for which motion occurs, and what that motion is, when the coefficient of static friction between all surfaces is (a) ?s = 0.40, (b) ?s = 0.50.
The chief engineer of an airport is planning to rehabilitate runway pavements over the next several months. You ask him what impact this would have on delays and queues, but he does not know
The specimens cured at 150oC had an average shear strength of 620 psi, with a standard deviation of 20 psi. Those cured at 130oC had an average shear strength of 750 psi, with a standard deviation of 30 psi.
While the swing bridge is closing with a constant rotation of 0.5 rad/s, a man runs along the roadway such that when d = 10 ft he is running outward from the center at 5ft/s with an acceleration of 2 ft/s^2, both measured relative to the roadway.
A bridge has cylindrical piers 1 m in diameter and spaced 15 m apart. Downstream of the bridge where the flow disturbance from the piers is no longer present, the flow depth is 2.9 m and the mean velocity is 2.5 m/s.
A rapid-mixing basin is to be designed for a water coagulation plant, and the design flow for the basin is 4.0 MGD (million gallons per day). The basin is to be square with a depth equal to 1.25 times the width.
Design a cantilever beam made of reinforced concrete. The rectangular beam is 18 ft long and subjected to a uniformly distributed dead load of 1.5 kip/ft (not including the beam weight)
The meter inlet and throat are connected by the two legs of a mercury manometer. Use the Bernoulli equation to describe how this manometer can be used to measure the flow rate through the meter.
hree wells are drilled in an unconfined aquifer with the following coordinates and observed heads: Well 1: 0,200 (meters) 50 (meters) Well 2: 240,130 54 Well 3: 140, 320 63 (a) Find the magnitude and direction of the hydraulic gradient.
a moist soil has a total unit weight of 110 pcf and a water content of 6 percent. assuming that hte dry unit weight is to remain constant , determine how much water , in gallons per cubic yard, must be added to increase the water content to 12 per..
calculate the amplitude F0 of the sinusoidal excitation force that is necessary to produce a steady-state vibration with a velocity amplitude of 10 m/s at resonance. what is the corresponding amplitude of the acceleration
The force is applied at the two pins. The pins allow rotation around the z-axis and do not allow rotation around the y-axis. The length of the beam between the pins is 8m. Determine the maximum allowable compressive force that can be applied.
Determine the design load for strength and serviceability limit states (short-term and long term), for a steel beam in a residential building with the following data;
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