Experiments performed on the wing of a hawkmoth (Manduca sexta) show that it deflects by a distance of x = 4.8 mm when a force of magnitude F = 3.0 mN is applied at the tip, as indicated in FIGURE 8-28. Treating the wing as an ideal spring, find
(a) The force constant of the wing and
(b) The energy stored in the wing when it is deflected.
(c) What force must be applied to the tip of the wing to store twice the energy found in part (b)?
You are watching: Treating the wing as an ideal spring, find the force constant of the wing.
For most gases at standard or near standard conditions, the relationship among pressure, density,...... ... this point. (b) At a point in the test section of a supersonic wind tunnel, the pressure and density of the air are 1058 lb/ft 2 and 1.23 x 10 -3 slug/ft 3 , respectively. Calculate the... View Answer
Experiments have been performed on the temperature distribution in a homogeneous long cylinder...... ... W/m3?GIVENA homogeneous long cylinder with uniform internal heat generationDiameter (D) = 0.1 mThermal conductivity (k) = 0.2 W/(m K)Difference between surface and center temperature (Tc ... View Answer
Under cruising conditions the distributed load acting on the wing of a small airplane has the idealized variation shown in the figure.Calculate the shear force V and bending moment M at the inboard end of the... View Answer
The lifting force along the wing of a jet aircraft consists of a uniform distribution along AB, and a semiparabolic distribution along BC with origin at B. Replace this loading by a single resultant force and specify its location measured from... View Answer
The internal drag truss for the wing of a light airplane is subjected to the forces shown. Determine the force in members BC, BH, and HC, and state if the members are in tension... View Answer
Domino Company uses the aging of accounts receivables method to estimate uncollectible accounts...... ... wrote off $2,590 in uncollectible accounts. In preparation for the company’s Year 2 estimate. Domino prepared the following aging schedule: What will Domino record as Uncollectible Accounts... View Answer
Use de Moivre\"s theorem to express cot 7? in terms of cot ?. (Use the equation cot 7? = 0 to show that the roots of the equation x 6 - 21x 4 + 35x 2 - 7 = 0 are cot (1/14 k?) for k = 1, 3, 5, 9, 11, 13 and deduce that View Answer
Dottie Martin is the CEO of Martin Industries. She seeks your advice as to how to assign the...... (e)... Advise Dottie on how to distribute the various functions amount Clerk # 1, Clerk #2, and Clerk #3, assuming all functions require about the same amount of time. (2) Explain at least three... View Answer
At the local ski slope, an 82.0-kg skier rides a gondola to the top of the mountain. If the lift has a length of 2950 m and makes an angle of 13.1° with the horizontal, what is the change in the gravitational potential energy of the skier-Earth system? View Answer
A vertical spring stores 0.962 J in spring potential energy when a 3.5-kg mass is suspended from...... ... By what multiplicative factor does the spring potential energy change if the mass attached to the spring is doubled? (b) Verify your answer to part (a) by calculating the spring potential... View Answer
Find all solutions to the homogeneous system Ax = 0 for the coefficient matrix(a) (b) (c) (d) (e) (f) (g) (h) View Answer
When a human takes a breath, the inhaled air flows through the nostrils and trachea before...... ... in the bronchial tubes may be assumed to have reached 37°C. Recognizing that half of a breathing cycle is exhaling, estimate the mass flow rates and the velocities of air flowing through the... View Answer
What two factors have hurt real estate in recent times? Why might the future outlook be more positive? View Answer
1. Should Rollermakers Corporation allow the two inside sales people to miss work in order to...... ... Purchasing Manager to attend the evening MBA program and to pay his tuition? 3. Should there be a formal policy regarding educational leave or should it remain informal? If the firm decides to... View Answer
What kind of unbundled pricing strategies or fees would you recommend for other service industries like hotels, restaurants, or cruise lines given the relative success of such fees in the air travel industry? View Answer
See more: ' You Dont Choose Who You Love With, Do You? And Kate Winslet
Heating and cooling of a building can be modeled by the ODE T\" = k1(T – Ta) + k2(T – Tw) + P,...... ... k2 are (negative) constants. Solve this ODE, assuming P = const, Tw = const, and Ta varying sinusoidally over 24 hours, say Ta = A – C cos (2/24)t. Discuss the effect of each term of the... View Answer