a mass of 890 kg, calculate th
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A: Volume of water, V= 10 lit= 10*10-3 m3 Initial temperature, Ti= 15oC Final temperature, Tf = 90oC
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A: Ans) 39.2 F
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- The homogeneous bar AB weighs 25 lb. Determine the magnitudes of the forces acting on the bar at A and B. Neglect friction.The uniform 240-lb bar AB is held in the position shown by the cable AC. Compute the tension in the cable.550 g static mass Time to Complete 60 Revolutions 39 sec Radius of Rotation for the Rotating Mass . 144 m Mass of the Rotating Mass . 449 kg % Difference Between the Static ans Centripetal Forces
- A caravan weighs 28 kN. It has a wheel base of 2 m, track width 1m and height ofC.G. 300 mm above the ground level and lies midway between the front andrear axle. The engine flywheel rotates at 2950 rpm clockwise when viewed from thefront. The moment of inertia of the flywheel is 4 kg-m 2 and moment of inertia ofeach wheel is 3 kg-m 2 . Find the reactions between the wheels and the ground whenthe car takes a curve of 15 m radius towards right at 30 km/h, taking intoconsideration the gyroscopic and the centrifugal effects. Each wheel radius is 400 mm.What is the mass supported as shown, when the torque created by an axis at position A is 1800 mN?Question 4 The following data apply to an outside cylinder uncoupled locomotive: Mass of rotating parts per cylinder = 250 kg; mass of reciprocating parts per cylinder = 200 kg; angle between cranks = 90°; crank radius = 0.3 m; cylinder centres = 2 m; radius of balance masses = 0.75 m; wheel centres = 1.45 m. If the whole of the rotating and two-thirds of the reciprocating parts are to be balanced in planes of the driving wheels, find the magnitude of swaying couple at 300 rpm. Select one: A. ±33.4 kNm B. ±51.2 kNm C. ±37.5 kNm D. ±27.9 kNm Question 5 For the data given in Question 4, find the value of variation in tractive effort. Select one: A. 27.7 kN B. 38.8 kN C. 41.2 kN D. 23.2 kN
- A machine part has the shape of a solid uniform sphere of mass 220 gg and diameter 3.50 cmcm . It is spinning about a frictionless axle through its center, but at a point at the top of the sphere, it is scraping against metal, resulting in a friction force of 0.0200 NN at that point. Find the angular acceleration of the sphere, including the direction (a positive value would indicate the +z direction and a negative value would indicate the -z direction).Question 3) The position of the head and neck and the forces acting on the head are shown in the figure. The center of gravity of the head of mass m=8 kg is located at point C. Neck muscle strength of FM=130 N, which makes an angle of γ=65° with the vertical from the B point to the skull, is affected by the neck extensor muscles. The center of the atlantooccipital joint is located at point B. For this flexion position of the head, the FJ joint reaction force, which makes an α angle with the horizontal from point A, acts. (Take the gravitational acceleration g as 9.81 m/s2). Accordingly; a) Calculate the angle α of the FJ joint reaction force with the horizontal. Response b) Calculate the FJ joint reaction force. (Write your result in N.) AnswerA wheel with rotational inertia 48 kg.m2 is mounted on a fixed, frictionless axle. The angular speed of the wheel is increased from zero to 59 rad/s in 12-s. What is the average net torque/Moment in N.m on the wheel during this time interval?
- A window cleaner is pulling himself up to a pulley that consists of two disks welded together as shown. The person is currently pulling straight down on the rope in his hands with a force of magnitude 580.4 N. The other rope is also vertical and is attached to the person's center of mass. The person's mass is 74.2 kg, the pulley's total moment of inertia is 395 kgm2, the radius of the small disk is 0.39 m, and the radius of the big disk is 0.73 m.What is the magnitude of the acceleration of the person's center of mass?Calculate the center of mass of the 6 lb right angle bar assuming constant density.Find the torque T, in Nm, that will keep the mechanism balanced at q = 30 degrees in the system shown. The limbs AE and CD are connected to each other at their midpoints, each having a length of L = 3.7 meters and a mass of m = 117 kg. The mass of the upper horizontal platform-shaped limb is 248 kg and the mass of the car is 1.123 kg and they have the centers of gravity shown in the figure.