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Determine the design stress for bolts in a cylinder cover where the load is fluctuating due to gas pressure. The maximum load on the bolt is 50 kN and the minimum is 30 kN.
A 1kg mass connected to a horizontal spring of stiffness 1,031 N/m has a dry-sliding friction force, of 2 N. The mass is displaced from equilibrium. As the mass oscillates, its amplitude decreases a t
To conserve water and energy, a "flow reducer" is installed in the shower head shown here. If the pressure at point (1) remains constant and all losses except for that in the flow reducer are neglecte
A rectangular intake air duct is 36 in. wide and 24 in. high. It runs for over 300 ft inside a warehouse and is at 50 F, but one end of the duct opens to the outside where outside air can enter the du
The tank is open to the atmosphere. If the truck moves along a circular curve (with radius R) at constant speed U, calculate the maximum velocity that can be achieved before the liquids star
Air is compressed under steady flow conditions, see Figure Q3. The power input to the compressor is 3 kW. During the process the specific heat loss from the compressor is measured to be 20 kJ/kg.
A steam turbine receives water at 15 MPa, 600oC at a rate of 100 kg/s, shown in Figure Q4 below. In the middle section 20 kg/s is withdrawn at 2 MPa, 350oC, and the rest exits the turbine at 75 kPa an
The transverse shear V at a certain section of timber beam is 25kN. if the beam has the cross sectio shown in the figure.
A cylinderical specimen made of annealed 4135 steel with K equal to 150,000 lb/in^2 and n equal to 0.27 has a diameter of 3 inches and 3 inches high.
The man has mass 80kg and sits a distance 3m from the center of the rotating platform. Due to the rotation his speed is increased from rest by the rate 0.4m/s.
Specifications for steel plate to be used in the construction of a certain bridge call for the minimum yield to be greater than 345 MPa. Engineers will perform a hypothesis test to decide whether to u
For a vertical cylinder with an electric heater 2500watt at the base,an inlet(lower part of cylinder with cold water at 25C) and outlet(upper part of cylinder, with hot water @ 100C) flow channel.
Argon gas enters an adiabatic compressor under steady flow conditions at 12o kpa and 30 C with a velocity of 20 m/s and exits at 1.2 Mpa, 530 C and 80 m/s.
A flywheel can be considered as being composed of a thin disc and a rim. The rim weighs 322 lb and has diameters of 24 in. and 30 in. The disc weighs 64.4 lb. Determine the mass moment of inertia abou
Calculate the total number of displaced atoms under the following conditions. See Equation 29 in Lecture 1 of Prof. Heuser's notes, and remember that a good approximation to the cutoff energ
A bank uses a certain form at a uniform rate of 60 pads per week during each of the 52 weeks per year it is in operation. Every replenishment order it places is delivered at one time.
What kind of metals are often recommended for use at low temperatures, particularly when any sudden loading of the part is expected?
Consider two identical rooms: one room has a refrigerator in it, the other does not. All the doors and windows in each room are closed and both rooms are well insulated.
If the truck moves along a circular curve (with radius R) at constant speed U, calculate the maximum velocity that can be achieved before the liquids starts spilling out of the tank.
A 250-kg crate B is suspended from a cable attached to a 20-kg trolley A which rides on an inclined I-beam as shown. Knowing that at the instant shown the trolley has an acceleration of up to the righ
Two blocks A and B are arranged with pulleys as shown. Block A has an initial velocity (t = 0s) to the left of vA=1.2 m/s. Block B has a constant acceleration of aB=0.40 m/s2 downwards.
Which view should be sketched directly below the TOP view?Why should center lines, visible lines, and hidden lines line up between views when sketching?
A ball is thrown vertically up with a velocity of 91 ft/sec at the edge of a 190-ft cliff. Calculate (a) the height h to which the ball rises and (b) the total time t after release for the ball to rea
The uniform work platform, which has a mass per unit length of 21 kg/m, is simply supported by cross rods A and B. The 93-kg construction worker starts from point B and walks to the right.
A ten-station rotary indexing machine performs nine machining operations at nine workstations, and the tenth station is used for loading and unloading parts.