Evaluate the mechanical impedance seen by the applied force driving an infinite string at distance L

Evaluate the mechanical impedance seen by the applied force driving an infinite string at distance L from a fixed end. Interpret the individual terms in the mechanical impedance

Design W14 columns for the bentshown below, with 50 ksi steel, using the inelastic…

Design W14 columns for the bentshown below, with 50 ksi steel, using the inelastic K-factorprocedure.The column are braced top andbottom againstsidesway out of the plane of the frame so K=1 in thatdirection.Sidesway is possible in the plane of theframe.Design the right-handcolumn by using K=1.0, and theleft-hand column with K as determined from the alignmentchart.Note that PD=550 kips and PL=300kips, forthe each column.The beam is rigidly connected tothe left column, but has only a simple connection to the rightcolumn.Note=LRFD only

The collar and bar have equal mass m, and the effect of friction is negligible. The system is…

The collar and bar have equal mass m, and the effect of friction is negligible. The system is released from rest at θ = 90°. Determine the inclination angle θ as a function of t for the case where (g/R) 1/2 = 1.6 rad/s by following alternative formulations:

(a) θ is a single unconstrained generalized coordinate, (b) θ and y are constrained generalized coordinates.

 

A unity feedback system with the forward transfer function G(s)=K/(s+1)(s+3)(s+6) is operating with. 1 answer below »

A unity feedback system with the forward transfer function G(s)=K/(s+1)(s+3)(s+6) is operating with a closed-loop step response that has 15% overshoot. Do the following:

a) Evaluate the steady-state error for a unit step input

b) Design a PI control to reduce the steady-state error to zero without affecting its transient response

c) Evaluate the steady-state error and overshoot for a unit step input to your compensated system

A unity feedback system with the forward transfer function G(s) is operating with a closed-loop step response that has 15% overshoot. Do the following (a) Evaluate the steady-state error for a unit step input; (b) Design a PI control to reduce the steady-state error to zero without affecting its transient response; (c) Evaluate the steady-state error and overshoot for a unit step input to your compensated system A unity feedback system with the forward transfer function G(s) is operating with a closed-loop step response that has 15% overshoot. Do the following (a) Evaluate the steady-state error for a unit step input; (b) Design a PI control to reduce the steady-state error to zero without affecting its transient response; (c) Evaluate the steady-state error and overshoot for a unit step input to your compensated system

1. Use the virtual work method to determine the rotation of joint D of the frame shown. 2. Using… 1 answer below »

1. Use the virtual work method to determine the rotation of joint D of the frame shown.

2. Using the method of virtual work, determine the vertical deflection at joint E of the frame shown in Fig. P7.43.

 

Thin rotating cylinders 1 answer below »

A thin rim is made by joining two halves with rivets. Determine the required diameter of the twelve rivets if the rim must rotate at 600 r/min and the allowable shear stress in the rivets is 83 MPa. Ignore the effects of the cover plates. The density of the material used is 7800 kg/m^3 (Cylinder is 1m in diameter, 100mm width and 12mm thick)

Aaron Alexis, the former Navy reservist who went on a shooting rampage in September 2013 and killed.

Aaron Alexis, the former Navy reservist who went on a shooting rampage in September 2013 and killed 12 people at the Washington Navy Yard in Washington D.C., had a history of mental instability, but he was carrying a valid security clearance. How would you suggest managers make decisions for issuing or revoking security clearances to prevent this kind of catastrophe?

5. One way to study the surface tension effects in a liquid/solid system is to dip a pair of…

5. One way to study the surface tension effects in a liquid/solid system is to dip a pair of parallel plates into the container of the liquid. How far up in a pairof parallel glass plates, 0.3 mm apart, would water at 40oC be drawn up?

6. A 5 kg block is supported on a thin film of an unknown liquid 0.2 mm thick on an incline of 10o. Determine the viscosity of the liquid if theterminal velocity is 5.678 m/s. Assume the velocity distribution in the gap is linear, and the area of the block in contact with the oil is 0.25 m2.What is the possible identity of the liquid if the temperature is 20°C?

Would you expect a material in which the atomic bonding

Would you expect a material in which the atomic bonding is predominantly ionic in nature to be more or less likely to form a non-crystalline solid upon solidification than a covalent material? Why?

What are digital signatures and smart cards? 1 answer below »

What are digital signatures and smart cards?