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A man having the mass of 77 kg sits in the chair which is pin-connected to the frame BC. If the man is always seated in an upright position, determine the magitudes of the horizontal and vertical reactions of the chair on the man at the instant \theta = 45^\circ. At this instant he has a speed of 6 {\rm m/s}, which is increasing at 0.5 {\rm m/s^2}
A project involves transporting iron pipe to a jobsite that is 43 miles from the supplier. The pipe will be hauled in trucks that can carry 16 pipes per load. Each pipe is 20 ft in length. The average haul speed of a truck will be 50 mi./hr and re..
Estimate the power in watts that can be produced by the turbine. Hint: In a time interval Dt,the amount of mass that flows through the rotor is Dm=mDt ,and the corresponding amount of kinetic energy in this flow is (Dm*V square/2)
A freeway exit ramp has a single 12-foot lane and consists entirely of a curve with a central angle of 90 degrees and L=628 feet. If the distance cleared of obstacles is 19.4 feet from the centerline, what design speed was used
compressed nitrogen (140 lbm) is stored in a spherical tank of diameter D = 2.5 ft @ temp. of 77 degrees Fahrenheit . what is the pressure inside the tank? if the max allowable stress is 30 ksi, find the minimum theoretical wall thickness.
Two particles start from the same point along the same straight line and at the same instant. The first particle travels with a constant velocity v and the second with a constant acceleration.
A footing 3m X 3m carries a pressure of 500 kN/ m2 at a depth of 1m in a sand substrate. The saturated unit weight of the sand is 20 kN/ m3 and the unit weight above the water table is 18 kN/ m3.
a container is supported by three cables that are attached to a ceiling. Determine the weight W of the container, knowing that the tension in cable AB is 6 kN
The casting has a mass of 3 Mg. Suspended in a vertical position and initially at rest, it is given an upward speed of V mm/s in 0.3s using a crane hook H. Determine the tension in cables AC and AB during this time interval if the acceleration is ..
For an elevated storage tank , if the minimum allowable pressure = 300 kPa, Height of pipe system at low-pressure service location = 6 m, and head loss from tank to service location: average daily conditions = 11 m
the engine develops a maximum torque of 210ft-lb at 3600 rev/min. what is the maximum grade this vehicle could ascend, on a paved surface, while the engine is developing maximum torque (assume that the available tractive effort is the engine-gener..
A sample of coarse aggregate weights 1072 grams when oven-dried, 1091 grams when saturated surface-dried, and 667.6 grams when submerged. Calculate the bulk specific gravity, apparent specific gravity, and percent absorption.
Evaluate the pressure head at point a and determine the vertical effective stress at point b and evaluate the lateral pressurein the brown clay
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