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Q1:Design a fourbar linkage to carry the bucket from a filling position on top of the scales on the table, to a dumping position over the conveyor belt. An intermediate position is specified to help ensure that the corner of the table is cleared. It is desirable that the moving pivots be on the bucket, and the fixed pivots be within the area of the table. Build a scale model (e.g. cardboard and thumbtacks) on top of the original drawing to prove the motion is achieved. The original drawing and all the graphical constructions should be included as the background for the model. Add a driving dyad to the fourbar to allow a motor to drive a crank continuously, while the bucket moves back and forth between its loading and dumping positions. Add to the model to prove this motion is achieved. Your submission should include the following: (i) a scanned image of the graphical constructions used to obtain the linkage.See Answer
Q2:Based on the zip file attached, need to answer the following questions - 1- what is the number of links? 2-what is number of 1 DOF full joints? 3-what is number of 2 DOF half joints? 4-What is number of DOF? Note - check assembly 2 final copy for Reference, book is attachedSee Answer
Q3:5- Gear trains Part a) What are the speed and direction of gear 8? (10 Marks) 18T = 1200 rev/min 3 5 1ST: 16T 44T 33T 36T 48T Part b) If internal gear 7 rotates at 60 rev/min CCW, determine the speed and direction of rotation of arm 3? (15 Marks) 7 154T 40T 36T wy 20TSee Answer
Q4:Cam design 4- Design a cam to move a follower at a constant velocity of 200 mm/sec for 3 sec then return to its starting position with a total cycle time of 6 sec. Deliveries: • • Cam timing diagram (follower displacement vs. cam rotation) Boundary conditions SVAJ diagram (MATLAB m-file should be submitted.) (15 Marks)See Answer
Q5:Velocity analysis 3. If V 10 in/s to the right, find a relationship between Vs and os using instant-center method. All dimensions are in inches. (20 Marks) 2.25 98 1.45 3.00 1.00 1.75 B* VAISee Answer
Q6:Acceleration analysis 2- In the following figure, link 2 is rotating CW at the constant rate of 180 rad/s. Determine ал, ав, ас, аз, а4. Link lengths: A A-4.6 in, AB - 12.0 in, A*B* 15.2 in, B B 9.2 in, AC-8.0 in, BC-5.48 in. Hint: To find a, a, a3 and a3, you can utilize either analytical method using MATLAB. (20 Marks) B B 4 C 3 2 120°See Answer
Q7:Kinematics fundamentals 1- Part a Determine the mobility of the following mechanism. The wheel must be rolling with slipping. (10 Marks) Part b For the four-bar linkage in the figure, indicate whether it is Grashof or non-Grashof. Also, find the transmission angle (μ). F-16 in, r-8 in, r-20 in. r-16 in. (10 Marks) 180°See Answer
Q8:HW-K1: KINEMATICS OF INTERCONNECTED RIGID BODIES Given: At the instant location of a mechanism determine the velocities of points B and C, the acceleration of point B as well. Use the respective data from the table. No INSTANTANEOUS VELOCITIES AND ACCELERATIONS DIMENTIONS [cm] [s] [s] V₁ [m/s] a₁, [m/s²] OA АВ | ВС | ОВ R 1 2 1 30 30 10 - α - 30/nK1-1 3 A C B ᎰSee Answer
Q9:1. Determine the support reactions for the Truss structure shown in the diagram. 2. Determine the member's internal forces indicated in the table by the method of Ritter and by the method of joints. 3. Determine the internal forces in all the members using a computer product and compare them with the results obtained in items 2 and 3. 4. Desinn the frame using standard steel profiles. Allowable stress [0]=160MPa SW TRUSS: https://play.google.com/store/apps/details?id=np.com.softwel.swtruss2d&hl=en&pli=1 https://appsonwindows.com/apk/1009952/ MDSolids MDSolids: Educational Software for Mechanics of Materials (mst.edu) Forces, kN P2 Dimentions, m Members in which to find No internal forces according to P1 P3 a h p. 2. 1. 4 10 3 2,0 2,5 6, 7, 10/n1 P1 a 5 Lo 10 Pa 8 11 a a ++See Answer
Q10:For the following 6-bar mechanism in which link 1 is the crank, a) Verify that it has 1 degree-of-freedom. b) Draw boxes around the four-bar mechanism that includes the crank and the appended dyad. Identify the type of the appended dyad (RTR, etc.) and the 6-bar scheme (R-XXX-XXX where the first R corresponds to the crank's revolute joint and X-R or T) The University of Arizona Department of Aerospace and Mechanical Engineering AME 352-Dynamics of Machines Spring 2024 B مSee Answer
Q11:Problem #3 In the following mechanism, 1. the joints between each pair of bodies in all the three dampers (1-2, 5-6, and 13-14) are prismatic joint. 2. all the other joints in this mechanism are revolute joint. 3. bodies 3 and 4, 8 and 9, 13 and 14 are parallel. Find the mobility (DOF) of the mechanism. Does one of the mobility equations give the correct result or do they require modification due to mobility paradoxes? 11 10 13 15 12 2 1 GroundSee Answer
Q12: WENTWORTH INSTITUTE OF FONESTY Bo EROY ECONOMY FOUNDED 1904 TECHNOLOGY BMED 4400 - Biomechanics Force Plate Purpose The objective of this lab experiment is to calculate and analyze the ground reaction forces and trajectory of the center of pressure during normal walking and running cycles. NNERS S Method Download the force plate data from Blackboard. Direction of Gait Figure 1: Measuring the ground reaction force using force plate system. WENTWORTH INSTITUTE OF FONESTY Bo EROY Part I.a: ● ECONOMY FOUNDED 1904 TECHNOLOGY ● Open the data located in folder “Part I", the data contains the ground reaction forces/moments and center of pressure (COP) data for two subjects who performed: O a normal walking cycle on the force plate O a normal running cycle on the force plate BMED 4400 - Biomechanics Force Plate (note: the time is measured in seconds, data collection is done at the frequency rate of 50Hz; e.g each data line in the force data files correspond to the data recorded at 1/50 of a sec) Open the "walking-FM" file of each subject and copy and paste the data to an excel document and plot the following graphs (use "scatter with smooth line" for all graphs): O Vertical ground reaction force (Fz) vs. Time O Medial/Lateral ground reaction force (Fy) vs. Time O Anterior/posterior ground reaction force (Fx) vs. Time Reaction moment along "x" axis (Mx) vs Time O Reaction moment along "y" axis (My) vs Time. Open the walking data of the second object, copy the data to excel and add the graphs for the above-mentioned parameters versus time to existing graphs of the first subject for comparison. In each graph, use solid lines for subject one and dash lines for subject two. Data order in Force data (file names with "FM"): Fx (N) Fy (N) Fz (N) Mx (Nm) COPX (cm) My (Nm) Open the Center of pressure data (COP) of both subjects, copy and paste the data to excel and plot the COPY vs COPx of both subject (Note: before plotting the data, convert the COP coordinates given in the txt files to mm (originally in CM); delete the rows which contain zero values) Data order in COP data (file names with "COP"): COPY (cm) Mz (Nm) Repeat all steps described above for running cycles (look at "Running-FM” and “Running-COP" data) WENTWORTH INSTITUTE OF FONESTY Bo EROY ● ECONOMY FOUNDED 1904 Copy all graphs (walking & running) to the report and explain the following questions. Consider the following gait schematic when answering the questions. TECHNOLOGY Heel strike O O Double support Loading response BMED 4400 - Biomechanics Force Plate Running experiment: Stance Phase Mid-stance Single support Terminal stance Pre-swing Double support Toe-off Swing Phase Mid-swing Walking experiment: O The maximum force occurs along which direction and why? O How the force reaction data of the two subjects compare? Is there any between the two? Compare the reaction moments along "x" and "y" direction; in which direction the moments are larger and why? How the ground reaction moments of the two subjects compare? Do you see any similar pattern? Single support Terminal swing pattern Compare the vertical ground reaction force (Fz) of each subject in running experiment against walking and explain the difference? O How does the trajectory of COP of each subject differ in walking vs. running? WENTWORTH INSTITUTE OF FONESTY Bo EROY ECONOMY FOUNDED 1904 TECHNOLOGY BMED 4400 - Biomechanics Force Plate Part I.b (take home) Read the article related to "Pedotti Diagram” and for the walking cycle of each subject calculate the following parameters as shown and plot the Pedotti diagram using matlab or excel: X₂ - X₁ = COPY (W x F₂) Sacle Factor (W = 0.025, Scale Factor = 100, change the SF if required to bring the data in range) Y₁ = 0 Y₂ = F₂z Note: Fx in the article represents the force along the vertical axis, normal to the plate (hint: use the force and COP data for each subject and caclulet the x1,y1 and x2,y2 coordinate at each frame or each line in excel; then create a graph in excel which includes a series of independent lines as shown below, each line represents one frame or data line in excel; alternativly you can use matlab to create the graph, in that case take the data to matlab and create a blank plot and plot the first line, then use the "hold on" command to keep the plot on and create the subsequnet lines using a loop) (X1, Y1) + COPY (X2, Y2) Paste the Pedotti graphs for the two subjects into the report and compare the graphs, what do you conclude form the comparison, briefly explain? WENTWORTH INSTITUTE OF FONESTY Bo ● ● ● EROY Part II: The subjects were asked to stand on the force plate and perform the following tasks: ● ECONOMY Put their right leg on the center of the force plate and do a single leg stance at upright posture Repeated the experiment after flexing forward to 90 deg Bent to the right and repeated the experiment The force data was calculated following each experiment; look at the data in “Part II" folder and: For each subject, find the maximum reaction force along "z" direction for each motion. How does the peak ground reaction force along “z” direction for all three movements of the subject one compares against the same data of subject two? ● FOUNDED 1904 TECHNOLOGY BMED 4400 - Biomechanics Force Plate Compare the maximum reaction force (absolute value) along "x" and "y" directions for each movement, which force component has a higher magnitude in each motion (do the comparison for both subjects)?See Answer
Q13:Question 2 - Go Kart Track (AC1.1, 1.2, 3.1, 3.2, 5.1 & 5.2) Your go karts have a mass of 450kg and travel around a circular curve on a flat, horizontal track at a radius of 42 m. a) Draw a diagram to show the go kart on the track and add an arrow to show the direction of the frictional force needed for the car to travel around the curve at a radius of 42 m. b) The maximum frictional force between the tyres and the road is equal to 20% of the weight of the car and driver. Calculate the coefficient of friction when an adult of mass 70kg is driving the kart. c) Calculate maximum angular velocity at which the car can travel round the curve at a constant radius of 42 m. d) Calculate the maximum linear velocity. e) You decide that this is not nearly fast enough and decide to create a banked track of 120, what is the maximum linear velocity now? f) Describe qualitatively how this could change if a child were driving the kart. g) It is important that the karts can brake effectively. They use drum brakes where a solid circular drum of mass 4.0 kg and radius 0.15 m is rotating at an angular speed of 22 rad s¹ about an axis when a 'braking' torque is applied to it which brings it to rest in 5.8 s./ng) It is important that the karts can brake effectively. They use drum brakes where a solid circular drum of mass 4.0 kg and radius 0.15 m is rotating at an angular speed of 22 rad s¹ about an axis when a 'braking' torque is applied to it which brings it to rest in 5.8 s. Calculate i) its angular deceleration when the braking torque is applied. ii) the moment of inertia of the drum about the axis shown 1 = 1mr² iii) the resultant torque that causes it to decelerate.See Answer
Q14:Scenario You have a new job working as designer for a new theme park. You have been tasked with designing two new attractions - one must be a go kart racetrack, and the other must be a food stand that serves fresh donuts, candy floss and sweets. Question 1 - Food stand (AC2.1, 2.2, 2.3, 4.1 & 4.2) You need to choose the correct oil for the donut fryer (power of the fryer is 2000W). The oil has plenty of time to heat up before opening, and you need it to stay as hot as possible to reduce the energy consumption when keeping the oil hot all day. You design an experiment to calculate the specific heat capacities of the oil. a) You decide to run your experiment for 5 minutes. Your results are in the table below. Use them to calculate the specific heat capacity of each oil, then choose an oil for your fryer based on these results. Mass (kg) 2.3kg 2.1kg 3.2 kg Oil type Corn oil Vegetable oil Lard b) You realise that lard is solid when you take it out of the fridge. You decide to run an experiment starting from solid state. 250 200 150 100 50 Temperature at the start (°C) 40 40 40 The graph of your results is below. Describe what is happening at each section of the graph. Then use this to calculate the total energy needed to heat 3.2kg of lard at 3°C out of the fridge to frying temperature of 200°C. The latent heat of fusion of lard is 60kJkg-¹ The specific heat capacity of lard when solid is 1.3kJkg-¹°C-¹ Lard Heating Graph 0 10 20 Time (minutes) 30 Temperature at the end (°C) 182 211 123 40 50/nc) One of the bestselling items at the stall are gummy worms, so you decide to perfect the recipe. The ideal gummy will stretch a little as you bite into it, but not too much. The mold you use produces worms with a length of 0.1m and a diameter of 0.03m. You narrow it down to two recipes. In the graph below are the two possible options you produce when you hang weights from the bottom of your two most likely gummy worms and measure the extension. Force (N) 4 6.4 Extension (cm) Calculate the Young Modulus of the gummy worms by converting one of the options into a stress/ strain graph (to be shown with your answers) and the other by using calculations. Choose which gummy worm you think would be better and explain why.See Answer
Q15:2.7. A radar antenna rotates about a fixed vertical axis at a constant angular velocity wo (Fig. P2.7). The angle oscillates as a, +a, sin ₁1. Determine the velocity and acceleration of probe P using the rotating coordinate system xyz attached to the vertical shaft. f ť 2.9. [ C/nFigure P2.7 WOSee Answer
Q16:8. [-/1 Points] MY NOTES ASK YOUR TEACHER m DETAILS SERPSE10 12.A.OP.023. In exercise physiology studies, it is sometimes important to determine the location of a person's center of mass. This determination can be done with the arrangement shown in the figure below. A light plank rests on two scales, which read F = 365 N and F = 335 N. A distance of 1.65 m separates the scales. How far from the woman's feet is her center of mass? 91 g2 1.65 m Need Help? Submit Answer Read It F-2 PRACTICE ANOTHER Watch ItSee Answer
Q17:7. [-/1 Points] MY NOTES DETAILS SERPSE10 12.A.OP.022.MI. ASK YOUR TEACHER A bridge of length 50.0 m and mass 8.50 x 104 kg is supported on a smooth pier at each end as shown in the figure below. A truck of mass 2.50 x 10¹ kg is located 15.0 m from one end. What are the forces on the bridge at the points of support? AN Need Help? 15.0 m normal force at point A normal force at point B Read It 50,0 m N N PRACTICE ANOTHER Master ItSee Answer
Q18:6. [-/1 Points] MY NOTES ASK YOUR TEACHER DETAILS SERPSE10 12.4.OP.019.MI. Need Help? A 220-kg load is hung on a wire of length of 3.90 m, cross-sectional area 2.000 x 105 m², and Young's modulus 8.00 x 1010 N/m². What is its increase in length? mm Submit Answer Read It PRACTICE ANOTHER Master ItSee Answer
Q19:5. [-/1 Points] MY NOTES ASK YOUR TEACHER DETAILS SERPSE10 12.3.OP.014. m One end of a uniform 3.80-m-long rod of weight F is supported by a cable at an angle of 0 = 37° with the rod. The other end rests against the wall, where it is held by friction as shown in the figure below. The coefficient of static friction between the wall and the rod is μ = 0.555. Determine the minimum distance x from point A at which an additional object, also with the same weight F, can be hung without causing the rod to slip at point A. Need Help? Read It 0 PRACTICE ANOTHER Watch it B 0See Answer
Q20:A 21.0-kg floodlight in a park is supported at the end of a horizontal beam of negligible mass that is hinged to a pole as shown in the figure below. A cable at an angle of 8 = 32.00 with the beam helps support the light. (a) Draw a force diagram for the beam. Choose File no file selected This answer has not been graded yet. (b) By computing torques about an axis at the hinge at the left-hand end of the beam, find the tension in the cable. (c) Find the horizontal component of the force exerted by the pole on the beam. magnitude direction -Select- N (d) Find the vertical component of this force. magnitude N direction ---Select-- Now solve the same problem from the force diagram from part (a) by computing torques around the junction between the cable and the beam at the right-hand end of the beam. (e) Find the vertical component of the force exerted by the pole on the beam. magnitude N direction -Select-OSee Answer

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