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A particle which moves in two-dimensional motion has coordinates given in inches by x = t2 - 4t + 20 and y = 3 sin 2t, where the time t is in seconds. Determine the magnitudes of the velocity v and the acceleration a and the angle theta between these two vectors at time t = 3 sec.
A 40 mm diameter hole is drilled 3 m deep into the steel shaft. When the two torque are applied, determine (a) the maximum shear stress in the shaft: and (b) the angle of rotation of the free end of the shaft. Use G= 83GPa for steel.
tom and jim are kicking a ball which has a mass of 490g back and forth. tom kicks the ball with a speed of 5ms
A short 60-mm-diameter circular bar is made of a material for which the maximum safe compressive stress is 80 MPa and the maximum safe shearing stress is 30 MPa. Determine the maximum axial compressive force that can be safely applied.
steam enters a diffuser at 20 psia and 240of with a velocity of 900 fts and exits as saturatednbspvapor at 240of and
a disk has a mass of 4kg and a radius of 90mm it is at rest when it is placed in contact with the belt which moves with
question 1the naca 4412 airfoil has a mean camber line given byby using thin airfoil theory calculatea. its zero-lift
What kind of metals are often recommended for use at low temperatures, particularly when any sudden loading of the part is expected?
A glass/epoxy laminate with a fiber orientation of 30 degrees is subjected to a shear stress t_xy (or tau_xy) which can be positive or negative.
design a computer programme using freudestein equation to synthesise a four bar linkage using three precision points also using more than three points.
the water level in a tank is 20 m above the ground. a hose is connected to the bottom of the tank and the nozzle at the
Calculate the static thrusts of the rocket and turbojet engine described in the figure. The thrust T is the force necessary to prevent horizontal movement of the engine. Both engines exhaust a mass flow of 40 kg/s.
the average idle human releases about 116 w of power which corresponds to a daily consumption of 2400 calories. at
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