0:45] am- Google Chrome du/mod/quiz/attempt.php?attempt=2340155&cmid=742781 P 250 mm 400 mm Time left 0:28:25 A = The following figure shows a spool that has a mass of 130 kg and a radius of gyration kg 0.3 m. If the coefficients of static and kinetic friction at A are μ, 0.86 and 0.81, respectively, and if you know that P 25000N, determine the following: a) Draw free body diagram. b) the angular acceleration of the spool. c) the acceleration of the center of mass of the spool G. d) the normal force at point A. e) the friction force at A. = Q Search % 5 6 7 8 9 00
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- Calculate the horizontal force P required to push the 85-lb lawn mower at constant speed. The center of gravity of the mower is at G, and the coefficients of rolling resistance are 0.12 for the front wheels and 0.18 for the rear wheels.The beam, uniform in mass, M = 47.6 kg and length L = 10.2 m, hangs by a cable supported at point B, and rotates without friction around point A. On the end far of the beam, an object of mass m = 24.3 kg is hanging. The beam is making an angle of θ = 30.9° at point A with respect to the + x-axis. The cable makes an angle φ = 21.1° with respect to the - x-axis at B. Assume ψ = θ + φ. a. Enter an expression for the lever arm for the weight of the beam, lB, about the point A. b. Find an expression for the lever arm for the weight of the mass, lm. c. Write an expression for the magnitude of the torque about point A created by the tension T. Give your answer in terms of the tension T and the other given parameters and trigonometric functions. d. What is the magnitude, in newtons, of the tension in the cable? e. Enter an expression the horizontal component of the force, Sx, that the wall exerts on the beam at point A in terms of the tension T, given parameters, and variables…The figure below is a system consisting of two masses MA = 1.82 kg and MB = 3.6 kg, whose distance from the pore axis is R₁ = R₂ = 15 cm, while the angular positions are 0₁ = 30° and 0 = 150° . Determine the weight and position of the balancing mass placed on planes C and D if the distance from the axis RC = RD = 15 cm.
- The wheel in the figure has a mass of 40 kg and a radius of rotation, in relation to its center of gravity, kG = 250 mm. Whereas there is no slip, determine the work done by the weight after it rotates 90 ° clockwise from illustrated position. The AB spring has a constant stiffness k = 100 N / m and a length in the undisturbed situation of 500 mm. Consider that the wheel is initially at rest.Mason is is trying to keep a door open using a door stopper. That door is solid, and it has a mass of 18.3kg. The door closer is connected 26.2cm away from the hinge, and pulls with a force of 123N. The door stopper provides a static friction force of 13.2N, and a kinetic friction force off 11.8N. Find the angular acceleration (as a vector) of the door.QUESTION: It is wanted to withdraw from A end with V_A velocity velocity (a_A = 0 m / s ^ 2) as shown on AB rod. Find the force F that will satisfy this condition. In this case, what are the support reactions at A and B points? Ignore the mass and atalat moments (I) and friction forces of the wheels. The inertia moment table of the rod is given.
- The slender, homogeneous rod shown in the figure below is 3 m in length and has a mass of 12 kg. At the instant shown, the rod has an angle to the horizontal of 60-degrees and an angular velocity of 2 rad/s clockwise. Both walls are smooth and provide negligible friction. At the instant shown, what are the reaction forces at A and B? What is the angular acceleration of the rod's center of mass?A force was applied to a 50 kg wheel as shown in the figure. If the wheel starts to rest without slipping Determine the angular acceleration ε, the wheel pressure on the ground N and the rotational speed of the wheel n after 10 revolutions, if the rolling friction coefficient f = 0.1. Take the radius of inertia of the wheel equal to 0.3 m.A homogeneous cylindrical wooden beam, with diameter of 48 cm, length of 3 m and mass of 100 kg, is hung horizontally by means of two 2 m ropes, as shown in the figure. The beam is released from rest in the position where each rope makes an angle of 60° with the horizontal. Determine the tension and angular acceleration of each rope at the exact moment the beam is released from rest. Please answer it only right someone give me incorrect answer. Answer is 2.45 rad/s^2. TA is 153.4N TB is 695.3N
- A crane that is 10 meters long is rotating (while loaded), at 1 radians/sec. It is stopped instantly (in 0.1 radian) in the position shown. Due to momentum the load continues to swing. Ignoring the deflection of the crane for this problem. (list all assumptions). The load is 750 lbs. a) The weight of the 10 m crane boom is 3000 lb and the mass moment of inertia is 80 lb ft s^2 about the centroid. Using the parallel axis theory find the mass moment of inertia around the point of rotation. b) What forces and moments are there on the boom at the point of rotation?Please answer: 3, 4, 5, 6, 8, 9, 10, 12 The wheel is attached to the spring. The mass of the wheel is m=20 kg. The radius of the wheel is 0.6m. The radius of gyration kG=0.4 m. The spring’s unstretched length is L0=1.0 m. The stiffness coefficient of the spring is k=2.0 N/m. The wheel is released from rest at the state 1 when the angle between the spring and the vertical direction is θ=30°. The wheel rolls without slipping and passes the position at the state 2 when the angle is θ=0°. The spring’s length at the state 2 is L2=4 m. (1) If the datum for gravitational potential energy is set as shown below, the the gravitational potential energy of the wheel at the state 1 is 0 N m(two decimal places) (ANSWER IS 0) (2) If the datum for gravitional potential energ is set as shown below, the gravitational potential energy of the wheel at the state 2 is 0 N m (two decimal places) (ANSWER IS 0) (3) At state 1, how long the spring is stretched from its unstretched state (length…3) The force, FT = 1 kN, and moment, MT = 0.5 kN-m, at the tip are caused by a wing tip vortexand a winglet, not shown. L = 12 m and the spar has an elastic modulus of E = 70 GPa and aPoisson’s ratio of n = 0.33. The mass of the wing is 4000 kg, and the weight of the engine is 107kN. Use 9.8 m/s 2 for the acceleration due to gravity. b = 0.4 m, d =0.5 m , t =0.1 m.a) The aerodynamic center is 0.1 m from the y axis (neutral axis). Calculate thetwist angle caused by the lift force. b) Calculate the reactions at the fixed end. c) Assume the engine applies a torque around the x – axis of the spar of 100 kN-m,calculate the angular delfection of the wing at x = 3 m due to the engine.