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- Draw shear force and bending moment diagrams. 10 lb 816 3º 12 lb (A) | 15 N 余文大早 林木 3m 2m 10N/m (B)Q1. As shown in the image below, the force acting on the box is F = (C · s²) Determine the work done by force F to the box when the box has displaced s = 1.7 m. Please pay attention: the numbers may change since they are randomized. Negative sign must be included if the work done is negative. Your answer must include 2 places after the decimal point, and proper Sl unit. N, where constant C = 6 and s is displacement in m. S F -Q1. As shown in the image below, the force acting on the box is F = (C.s²) N, where constant C = 2 and s is displacement in m. S Determine the work done by force ♬ to the box when the box has displaced s = 1.2 m. Please pay attention: the numbers may change since they are randomized. Negative sign must be included if the work done is negative. Your answer must include 2 places after the decimal point, and proper Sl unit. 1 F Your Answer: Answer units S
- Suppose that P1 = 900 lb and P2 = 1200 lb Express your answer in kilopounds to three significant figures. Enter negative value in the case of compression and positive value in the case of tension. a) FCD b) FKJQ/ Compute the magnitude F of the force which the earth exerts on the moon, Perform the calculation in Newtons. Hint: Please use : F = G mim2 G= 6.673*10" m'/kg.s m-5.976*104 kg mzm-6.673*10" kg r-384398*10Steel crane rails of the MRT are laid with their adjacent ends 3.2 m apart when the temperature is 15 °C. The length of each rail is 18 m. The coefficient of thermal expansion is 11.7 x 10-6 m/m.ºC. Use E= 200 GPa. a) Determine the temperature at which the rails will touch end to end. b) Determine the gap between adjacent ends when the temperature drops to -10°C. c) Determine the compressive stress in the rails when the temperature reaches 45 °C.
- ا من ۱ A ball of weight 120 N rests in a right angled groove as shown in Fig. The sides of the groove are inclined at an angle of 30° and 60" to the horizontal If all the surfaces are smooth, the reaction R, is given by V. TT 120 N 30° B 60° 1) 60 N 3) 30 N 2) 120 N 4) 103.92 N temeter 100 cm Ganessh G@NU 20:14 äc luJI 21.03.11 ...5) A particle is dropped from a height of 100 m. Determine the time required for the particle to fall if i) we neglect air resistance and ii) we include air resistance - a = g-0.001v². ANS. Without air resistance, t = 4.518 sec With air resistance, t = 4.593 sec2 Your friend is planning to ride his bike up a ramp and land on the roof of a building as shown below. The building is 6.00 m high and 8.00 m away from the ramp. The ramp is 3.00 m wide and 4.00 m tall. 4.00 m 1 ← 3.00 m 6.00 m 8.00 m A. What is the minimum speed with which your friend needs to leave the ramp in order to land on the building? B. Another friend is going to use his motorized scooter for the same stunt. The maximum speed of the scooter is 15.0 m/s. How close to the building should you move the ramp so that your friend lands on the roof right at the front edge of the building?
- Four consumers are willing to pay these amounts for haircuts, and four haircutting businesses have these costs: Consumers' Willingness to Pay Firms' Costs Edison: $45 Firm A: $40 Kevin: $25 Firm B: $20 Maria: $15 Hilary: $35 Firm C: $10 Firm D: $30 Each firm has the capacity to produce only one haircut. For efficiency, should be given. Which businesses should cut hair? Check all that apply. Firm A Firm B Firm C Firm D Which consumers should have their hair cut? Check all that apply. Edison Hilary Kevin Maria The maximum possible total surplus is $1.22 In order to prevent frostbite to skiers on chair lifts, the weather report at most ski areas gives both an air temperature and the wind-chill temperature. The air temperature is measured with a thermometer that is not affected by the wind. However, the rate of heat loss from the skier increases with wind velocity, and the wind-chill temperature is the temperature that would result in the same rate of heat loss in still air as occurs at the measured air temperature with the existing wind. Suppose that the inner temperature of a 3-mm-thick layer of skin with a thermal conductivity of 0.35 W/m K is and the air temperature is . Under calm ambient conditions the heat transfer coefficient at the outer skin surface is about (see Table 1.4), but in a 40-mph wind it increases to . (a) If frostbite occurs when the skin temperature drops to about , do you advise the skier to wear a face mask? (b) What is the skin temperature drop due to the wind?For the following problem please show your step by step process so your thought process can be followed. Please also show a sketch, quantities given, quantities to be found, and boxed answer with units.