IP_2020_L08_Exp01_Centripetal_Force Lab 2

Statically Equivalent Loads. A highly idealized biomechanical model of the human body is shown below, sectioned in a horizontal plane through the lower back showing the major muscle forces in gray, with the back of the body in the positive y-direction. The same four muscles act on the left and right sides of the trunk and there is symmetry with respect to the y – z plane. On each side, the tensile (pulling) forces acting in each of the four different muscles are: FR = 150 N, Fo = 150 N, F1 = 230 N, and Fr = 320 N, and all are acting in the z-direction. Assume that this system of muscle forces is statically equivalent to a single resultant force vector Fres and a single resultant moment vector Mres, referenced to point 0. a- For this cartesian coordinate system, calculate the three components (x, y, and z) of Mres b- Which components (x, y, or z) of the resultant muscle moment vector would enable you to bend in the forward-backward direction, bend to one side, and twist, respectively?…

7. Why are land and groove markings on a bullet considered Class Evidence, while the striation markings on a bullet are consider Individual Evidence? 8. You recover two bullets from the wall of a crime scene. These recovered bullets are visible below: Bullet #1 Enlarged View Enlarged View Bullet #2 Actual Size Actual Size Bottom View Bottom View Bottom View Bottom View Complete the Evidence Table below. You can easily convert millimeters to inches (if needed) using the following formula: # of millimeters # of inches 25.4 mm per inch Firearm likely produced by what manufacturer? Approximate Bullet Evidence Table Direction of # of Lands Caliber Twist (English) Bullet #1 Bullet #2 Do you believe that Bullet #1 and Bullet #2 were fired from the same gun? 86

Simple Machines-Levers, Inclined Planes, and Pulleys Directions: Use the appropriate equation to answer the following questions. All answers should be recorded below or in your Engineering Design journal. Remember to show all work. A lever has an effort arm that is 5 meters long and a resistance (load) arm that is 3.5 meters long. How much effort is needed to lift a 100 Newton weight? 5K i). Draw the figure representing the problem ii). How much effort is needed to lift a 100 Newton weight? iii). What is the Actual Mechanical Advantage 1. 5m i) AOON 5-5m

Problem 4: Values: a = 300 mm b = 75 mm c = 100 mm Use the graphical method to break F into components parallel to bars AB and BC. If the component parallel to bar AB is 7 kN, what is the magnitude of F? Comments: B This is a perfect example of why the graphical method is useful - we are asked to resolve a force into components that are not perpendicular to one another. It's difficult to apply regular old sine and cosine (i.e. trig) for this because we're not dealing with right triangles. Instead we will use the law of sines and/or the law of cosines. • Start by drawing a vertical line to represent the vector F. Now draw a line parallel to AB passing through the top of F, and another line, also parallel to AB, through the bottom. Repeat for BC. You should have a parallelogram divided into two triangles by the resultant vector F. Pick one of the triangles to work with, use geometry to figure out the angles, and then apply the law of sines to compute the magnitude of F. Remember, these…

QUESTION 2 Thermocouples are devices used to measure temperature of a given sample or the surrounding medium. These devices feature a "bead", which has a spherical shape, and produces voltage upon change in temperature. For an engineering application at a pharmaceutical company, thermocouple devices are being tested for their responsiveness, i.e. how fast it can detect temperature changes in the environment (surrounding air). The engineers at this company have specified design constraints for an ideal thermocouple: it must detect temperature changes no later than 1.5 minute, and the reported temperature value must be reasonably correct: at most %3 difference between measured and actual temperature values is allowed. Four thermocouples from different vendors are being tested. Relevant properties of these devices are listed below: Thermal conductivity Density 36 W/m*K 36 W/m*K 42 W/m*K 33 W/m*K Specific Heat 140 kJ/kg*K 120 kJ/kg*K 150 kJ/kg*K 160 kJ/kg*K Device Bead Diameter…

Recall that muscle generates force at 30 N/cm?. Two cross sections are taken from the rectus femoris muscle (bipennate muscle similar to the diagram below). The length and width of the first cross section is 6 cm and 5 cm respectively with a 35° angle of pennation. The length and width of the second cross section is 5.6 cm and 3 cm respectively with a 31° angle of pennation. What is the predicted maximum tendon force (FTendon) of this muscle in Newtons? Answer to the nearest 0.1 N. Freodas

An experimental apparatus is set up as shown below with a solenoid sitting on an electronic balance. A permanent magnet is suspended above the solenoid, and either an ammeter (to measure current) or a battery (to supply current) can be placed at the location marked x. The polarity of the magnet and the battery are both shown. This setup can be used to test several different physical concepts. Design an experiment to test one of the physics concepts from this unit. Note: There is more than one correct answer possible; your answer should create a correct sequence.

Refer to the Worksheet shown, set up to calculate the displacement of a spring. Hooke's law states that the force (F, in newtons) applied to a spring is equal to the stiffness of the spring (k, in newtons per meter) times the displacement {x, in meters): F= kx. ;Chapter 10, Problem 161CA, Refer to the Worksheet shown, set up to calculate the displacement of a spring. Hooke's law states Cell A3 contains a data validation list of springs. The stiffness (cell 83) and maximum displacement (cell C3) values are found using a VLOOKUP function linked to the table shown at the right side of the worksheet. These data are then used to determine the displacement of the spring at various mass values. A warning is issued if the displacement determined is greater than the maximum displacement for the spring. Use this information to determine the answers to the following questions. Write the expression, in Excel notation, that you would type into cell 86 to determine the displacement of the spring.…

Mechanical Engineering Spring Weight Pen Rotating Drum Horizontal Motion Identify the basic functional elements and draw the block diagram of the functional elements involved in this measurement device.

5. वो D 10' F is the orange arrow C 10' B 45* 1000lbs Find FAD, FBC, FCD FAB FAC -7

5 example of chemical hazard 5 example of physical hazard 5 example of erginimic hazard 5 example of biological hazards