Find: friction force between the spool and the ground. and the UNIT of measurement of the acceleration of the mass center of the spool
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Find: friction force between the spool and the ground. and the UNIT of measurement of the acceleration of the mass center of the spool
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- Q3/ A shaft has three eccentric of mass 1 kg each. The central plane of the eccentrics is 50 mm apart. The distances of the centers from the axis of rotation are 20, 30 and 20 mm and their angular positions are 120 apart. If the shaft is balanced by adding two niasses at a radius of 70 mm and at a distance 100 mm from the central plane of the middle eccentric, find the amount of the masses and their angular positions.1. The 60-lb flywheel has a radius of gyration about its shaft axis of ko = 15 inches. Starting at 1 = 0 with a speed of 90 rpm, the flywheel is subjected to a torque that will stop the flywheel in 10 s. The torque M ramps up from 0 to Mmax in 3 s, then holds steady at Mmar until stopped. What must be the value of Mmar?The 300kn sphere is supported by a pull p and a 200kn weight passing over a frictionless pulley. If a=30°. Computer the value of p and tangent.
- An inside cylinder locomotive has its cylinder centre lines 1 m apart and has a stroke of 1 m. The rotating masses per cylinder are equivalent to 100 kg at the crank pin, and the reciprocating masses per cylinder to 200 kg. The wheel centre lines are 2 m apart. The cranks are at right angles. The whole of the rotating and 2/3 of the reciprocating masses are to be balanced by masses placed at a radius of 0.8 m. Find the magnitude of the balancing mass on the right most wheel. Select one: A. 55.32 kg B. 322.3 kg C. 225.3 kg D. 115.3 kgThe force F 250 N is applied to a wheel weighing 20 kg and having a radius of inertia of 150 mm as shown in the figure. This force lifts a weight B of 10 kg. Calculate the angular acceleration of the pulley and the normal acceleration of the weight B, the tension of the rope and the reaction in the bearing of the pulley.Two masses A and B are 5kg and 2kg respectively rotating in a shaft. The corresponding radii of rotation are 0.2m and 0.3m respectively and the angle between the masses is 600. Find the position and magnitude of the balance mass required, if its radius of rotation is 200 mm using graphical method and also verify your answer with analytical method.
- An inside cylinder locomotive has its cylinder centre lines 1 m apart and has a stroke of 1 m. The rotating masses per cylinder are equivalent to 200 kg at the crank pin, and the reciprocating masses per cylinder to 300 kg. The wheel centre lines are 2 m apart. The cranks are at right angles. The whole of the rotating and 2/3 of the reciprocating masses are to be balanced by masses placed at a radius of 0.8 m. Find the value of variation in tractive effort at 300 rpm. Select one: A. ±58476 N B. ±69780 N C. ±79654 N D. ±12475 NThe rope shown in the figure below is wound around a cylinder of mass 4.0 kg and I = 0.020 kg m2, about the cylinder axis. If the cylinder rolls without slipping, what is the linear acceleration of its center of mass? What is the frictional force? Use an axis along the cylinder axis for your computation. What happens if the frictional force between table and cylinder is negligible? Choose any axis for your computation.Question 2: A prop shaft of a heavy-duty truck has two bearings which are positioned at 3 metres from each other. The shaft must rotate at 30 rad/s when the truck travels at the speed of 40 m/s. Such a shaft carries two masses of (MA = 10 kg) and (MB = 5 kg) acting at the extremities of the arms 0.45 m and 0.6 m long, respectively. The planes in which these masses rotate are 1.2 m and 2.4 m,
- Q3/ A shaft has three eccentric of mass 1 kg cach. The central plane of the eccentrics is 50 mm apart. The distances of the centers from the axis of rotation are 20, 30 and 20 mm and their angular positions are 120° apart. If the shaft is balanced by adding two masses at a radius of 70 mm and at a distance 100 mm from the central plane of the middle eccentric, find the amount of the masses and their angular positions.A shaft has three eccentrics of mass 1kg each. The central plane of the eccentrics is 50 mm apart. The distances of the centers from the axis of rotation are 20 mm, 30 mm, and 20 mm and their angular positions are 120 degree apart. Find the amount of out-of-balance force and couple at 600 rpm. If the shaft is balances by adding two masses at a radius of 70 mm and at a distance of 100 mm from the central plane of the middle eccentrics, find the amount of masses and their angular positions. (Use graphical method for solution)The iillustration depicts a prototype design for the High-G Rover. It is made up of an arm that is attached to a shaft that is pinned to a disk. The aarm has a retractable shaft that extends and contracts to cause the disk to rotate. To make the computation easier, let us assumee that the arm does nott rotate A. If the arm's total length is L = 640mm, the distance from the centre of the disk to the shaft pin is r = 112mm, and the arm rotates clockwise at a constant angular velocity of 250.273 rpm. 1.) Would an increase in angular velocity increase point C's linear velocity relative to point A? If so, why or why not? a.) What is the linear velocity of point C with respect to point A if the angular position of the pin (between AB and BC) is 0.578 radians? b.) What is the distance between points A and C if the angular position of the pin (between AB and BC) is 0.578 radians? c.) What is the linear velocity of point C with respect to point A if the angular velocity is increased by 34.34…