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Repeat Problem 2.16 where the weight of the gearbox is 40 lb.
Problem 2.16
The drawing (Figure P2.16) shows an exploded view of an 1800-rpm motor, a gear box, and a 6000-rpm blower. The gear box weighs 20 lb, with center of gravity midway between the two mountings. All shafts rotate counterclockwise, viewed from the blower. Neglecting friction losses, determine all loads acting on the gear box when the motor output is 1 hp. Sketch the gear box as a free body in equilibrium.
A 4.0 cm diameter sphere is heated to a temperature of 200 C & is enclosed in a large room at 20 C. Calculate the radiant heat loss if the surface emissivity is 0.6.
when a 2000 lb vehicle is empty the static deflection of its suspen- sion system is measured as 0.8 in. what is the
Find the response of systems governed by the following equation of motion for the initial conditions x(0)=1, xdot(0)=-1:
The device is used to hold an elevator door open. If the spring has a stiffness of k = 50N/m and it is compressed 0.17m, determine the horizontal and vertical components of reaction at the pin A and the resultant force at the wheel bearing B.
a car air conditioning system operates with r-134a in the peak summer outside at 100degf and inside desired at 77degf.
For the Scotch yoke mechanism of Fig. 10.35, sketch the supporting frame (link 1) of the mechanism as a free body and show vectors of forces and couple imposed on the frame by the moving parts of the mechanism in approximately the phase shown.
determine the required diameter of the wheels. Neglect the rolling resistance between the wheels and the ground.
As preparation, design two separate circuits using different approaches. Evaluate the bandwidth, noise, error due to offset voltage, and cost. Build and experimentally measure bandwidth, noise, and offset error.
A reaction is found to be 25 times faster at 400 K than at 300 K. Measurements of the temperature exponent yielded a value of 0.7. Calculate the activation energy of the reaction. How much faster will the reaction be at 1000 K?
superheated steam can be cooled by injecting liquid water into it and this process is termed desuperheating. a flow of
If so, estimate the oxygen mass flow if the tank conditions are 300 kPa and 450 K, with a nozzle diameter of 3 cm
The dry desnity of a compacted sand is 1.87 Mg/m^3 and the denisty of the solids is 2.67 Mg/m^3. What is the water content of the material when saturated? Please use phase diagram.
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