A four bar mechanism is made up of links of length 100,200,300 and 350 mm. if the 350 mm link is fixed, the number of links that can rotate fully g= 300 mm
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- 'Use g=10ms^-2 unless otherwise stated. In each of the following diagrams, a uniform rod of length 10 metres and weight 50N is being held in equilibrium by two vertical wires. Find the unknown values.' I dont know how they got their answer.Determine the equivalent torsional spring constant of the system that will be located in the position of point 0. k=1.5N/m. The bar is 2 meters long. (answer in N-m)Solve Sample Prob. 4.5, assuming that the spring is unstretched when 0 = 90°.(Reference to Sample Problem 4.5):
- Pulleys A and B are separated by 450 mm. The shaft has a diameter of 40 mm and is made of steel with G=75GPa�=75GPa. Pulley A has a radius of 100 mm and pulley b has a radius of 150 mm. The belt on pulley A has a tension of 4 kN in the counter-clockwise direction and a tension of 10 kN in the clockwise direction. The belt on pulley B has a tension of 6 kN in the counter-clockwise direction and a tension of 2 kN in the clockwise direction. What is the angle of twist (in degrees) of pulley B relative to pulley A?A 6-in-wide polyamide F-1 flat belt is used to connect a 4-in-diameter pulley to drive a larger pulley with an angular velocity ratio of 3. The center-to-center distance is 8 ft. The angular speed of the small pulley is 1850 rev/min as it delivers 2 hp. The service is such that a service factor Ks of 1.25 is appropriate. (a) Find Fc, Fi, F1a, and F2. (b) Find Ha, nfs, and belt length. (c) Find the dip.Two identical ball bearings Pand Q are operating at loads 30 kN and 45 kN respectively. The ratio of the life of bearing P to the life of bearing Qis
- A spring has a load of 50 lb with a spring index of 8. If the induced stress is 90ksi, determine the wire diameter.A belt drive is used to transmit power from an electric motor to a compressor for a refrigerated truck. The compressor must still operate when the truck is parked and the engine is not running. The 50-hp electric motor is rated at 150+X rpm (where value of X = 50), and the motor sheave diameter is 5+d1 in. (where value of d1 = 5). The compressor sheave has 8+d2 in (where value of d2 = 5) diameter. The center distance of the drive is 15 in. Determine the appropriate industrial V belt size, the length of belt, operating speed of compressor and belt speed.Calculate the amount of mass to be placed on the LCP and RCP with a radial radius of 0.2m in order to dynamically balance the shaft given on the right.m 1=3 kgm 2= 4 kgR 1=0.1mR 2=0.2m
- Determine the wahl's factor of a spring designed to fire a 3kg projectile. The outside diameter of the cil is 170 mm with 10mm wire diameter and a total of 20 coils squared and ground. The spring has a free length of 625 mm. When set or loaded the spring is compressed to a length of 444mm.A vertical shaft is supported by two deep groove ball bearings as shown below. The shaft will be driven by vee belts through a pulley. The combined tensions of the belt apply and the weight of the pulley assembly applies a force of 5.4kN and 900N respectively. The shaft has a diameter of 32mm. Bearing A at the top supports the shaft radially whereas bearing B at the bottom supports the shaft axially and radially. Two deep groove ball bearings have been selected for this application. The models of the bearings are SKF 6305 and SKF 6205 for bearing A and B respectively. a) What are the forces at bearing A and B? b) Paste a screenshot of the graph showing the distribution of the forces in the shaft. c) From the report, find the static load capacity for: Bearing A Bearing BA semi-elliptic spring used for automobile suspension, consists of twoextra full-length leaves and eight graduated-length leaves, including themaster leaf. The centre-to-centre distance between the two eyes is 1 m.The leaves are made of steel 55Si2Mo90 (S = 1500 N/mm yt2 andE = 207 000 N/mm2) and the factor of safety is 2. The maximum springload is 30 kN. The leaves are pre-stressed so as to equalize stresses in allleaves under maximum load. Determine the dimensions of thecross-section of the leaves and the deflection at the end of the spring.