etermine the Grashof condition of the following mechanism as shown
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- 3 m 5:54 PM ANTA D C E F B -2 m--2 m--2 m--2 m--2 m--2 m- 20 kN 30 kN 40 kN ( 50 ) l اس. © 2 G Find the Vertical Support Reaction at A (in kN). Input the magnitude only (don't include a negative sign). The tolerance for the answer is +/-0.01.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 B5:55 PM ~ 3 m 20 kN [Ε B -2 m--2 m--2 m--2 m--2 m--2 m- Member AB is a: N D 30 kN 40 kN O Tensile Member O Compressive Member O Zero-Force Member O Not a Member ( 50 ) l اس. © 2 F G
- Determine the equivalent spring stiffness constant of the following spring in series and parallel. 60 N/m 90 N/m wwwm 120 N/m 150 N/m 30 N/m www 300 N/m FPulleys 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?4. Determine the maximum stress and elongation in a helical steel spring composed of 20 turns of 20 mm diameter wire on a mean radius of 80 mm when the heavy spring is supporting a load of 2 kN. a. Identify and write down the required factor to differentiate spring that considers spring curvature. b. Set up the equations of stress and elongation that is required to solve the problem. c. Solve for the unknown variables by substituting the given in the equations of stress that has been set up previously.
- 5:55 PM О 3 m 20 kN C B m-I-2 m-I-2 m-+-2 m++2 m-/+2 m-| Member AL is a: МИ Ф. ID E F 30 kN O Tensile Member O Compressive Member O Zero-Force Member O Not a Member до .Illull 50 40 kNDetermine the movement of the pointer (in mm) with respect to the scale zero in response to a temperature increase of 24°C. The length of the steel support, A, is 446mm The coefficients of themal expansion are 11.7x10-6/°C for the steel and 23.6x10-6/°C for the aluminium. Note: Do NOT include units with your answer 180mm 40mm -Smooth pins Steel Aluminum Steel Answer:Determine the tension in the rope for the frictionless pulley system. Use g = 9.81 m/s2, round the answer to 4 significant digits. A 135° 70° statics 120 kg
- = Q3. As shown on the right in image below, the force Facting on the box varies with displacement s, and the coefficient in the image, C = 18. Determine the work done by force F to the box when the box has displaced s 1.8 m. Please pay attention: the numbers may change since they are randomized. Negative sign must be included if the work done is negative. Your answer must include 2 places after the decimal point, and proper Sl unit. F Your Answer: Answer - S units F (N) C 1 2 s (m)3 m 5:54 PM φλ C D E H F B -2 m--2 m--2 m--2 m--2 m--2 m- 20 kN 30 kN 40 kN ( 50 ) l اس. © 2 Find the Vertical Support Reaction at G (in kN). Input the magnitude only (don't include negative sign). The tolerance for the answer is +/-0.01.Q1: The arrangement of a transmission brake is shown in the figure. The arms are pivoted at O and, when force is applied at the end of the hand lever, the screw AB will rotate. The left-and right- hand threads working in nuts on the ends of the arms will move the arms together and thus apply the brake actuating force equally. A B 12cm The drum is 17.75cm diameter, and the angle subtended by each block is 90°. the friction material lining width is 4cm. Assuming a coefficient of friction for the braking surfaces that is equal to 0.30 Determine the force required by the screw AB to set the brake torque on the drum equal to 200 N-m. 17 75cm 12cm 46 35cm Torqueleft= TorqueRight= 97.40 N.m 6 35cm 102.60 N.m