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- Q. No1. Describe the utilization of “Six-Basic Flight Instruments” in Cessna-172.Question 2 A Porter governor has a minimum speed of 134 rpm and a range of speed of 21 rpm. All four arms of the governor are equal in length, and each is equal to 250 m. The ball mass and the central mass loaded on the sleeve are 5 kg and 15 kg, respectively. Calculate the angle between the two upper arms of the governor when the governor starts to lift and when the governor is at maximum.Problem 2 (6 points): Blocks A, B and C have weights 50 lb, 25 lb and 15 lb. Block A is tied to wall by a cable. Force P is applied to a cable tied to block B. Coefficient of static friction between blocks A and B is 0.3, between blocks B and C 0.359, between C and ground D is 0.32. a) State the cases of impending motion as the horizontal force P is applied to block B. b) Assuming one of the stated cases of impending motion, draw proper Free Body Diagrams for the assumed case of impending motion. Label the assumed case of impending motion. c) Determine the smallest force P needed to cause impending motion. Justify your answer. d) Determine tension in cable A, from your final answer for the force P. A B D
- Question 3) The masses of A and B blocks are mA and mB, respectively. These two blocks are connected by a handle and released. Calculate the force on the arm. Take the kinetic friction coefficient between A block and the surface as µA = 0.15 and the kinetic friction coefficient between B block and the surface as µB = 0.4. Neglect the %3D mass of the arm. mA(kg)= 7.5 mB (kg)=3.75 e (o)=40 A Bplease include free body diagrams02. Two-body systems (joined by a light inextensible string); both on a flat horizontal plane with and without friction. Two blocks weighing 4kg and 7kg are connected by a light inextensible string. A force of 25ON is applied on the 7kg block at an angle of 30° to the horizontal, as shown in the diagram below. The system moves to the east. Each block experiences a frictional force of 45 N. Find a) The acceleration of the system. b) The tension in the string. Fa= 250 N 30° 4 kg 7 kg
- 1. Draw a free body diagram for the block on the ramp that is attached to the string. There is no friction between the block and the ramp. The angle of the ramp is 35 degrees with respect to the horizontal, and the angle of the string is 45 degrees with respect to the horizontal. The block is at rest, and it has a mass of 10 kg. The acceleration due to gravity for this experiment is 9.8 m/s?. 450 35° 2. Decompose all of the forces into x and y forces 3. Sum the x forces and set them equal to what they should be set equal to. Sum the y forces and set THEM equal to what they should be set equal to.Problem 5: In the figure shown, m¡ is 27 kg, and m2 is 27.4 kg. mi m2 Find the coefficient of static friction if the blocks do not move. Numeric : A numeric value is expected and not an expression. Us =Friction does not depend on the shape and area of contact of the bodies. Select one: True False
- 2 Angle of friction is the a. Angle between normal reaction and the resultant of normal reaction and the limiting friction b. Ratio of limiting friction and normal reaction c. The ratio of minimum friction force to friction force acting when the body is in motion d. The ratio of minimum friction force to the friction force acting when the body is just about to moveDrew is pushing a 12.0-kg box on a floor until he runs into a horizontal spring. The values of force for a few different values of horizontal position x are (x, F): (-2, 10), (-1, 10), (0, 10), (1, 15), (2, 20), (3, 25), (4, 30). a. What is the coefficient of friction? b. What is the work done by Drew's pushing force from x = 0 m to x = 7 m, where x = 0 m corresponds to the initial contact with the spring? c. What fraction of this work goes into heat?a) The maximum force P that can be applied to the system based solely on the boards is most nearly b)The maximum force P that can be applied to the system based solely on the glued splice is most nearly