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1) Calculate the magnitude of the force in the elbow joint in units of newtons.

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Dogs, like many animals, stand and walk on their toes. (Figure 1) shows the rear foot and leg of a 20kg dog along with the relevant distances and angles. The Achilles tendon pulls on the heel at an angle 15° from vertical. Part A What is the tension in the tendon if the dog is supporting one fourth of its weight on each foot? Express your answer with the appropriate units. F = N CalfmuscleAchillestendon15\deg 45\deg 9.0 cm 4.0 cm Calf muscle Achilles tendon -15° -45° 9.0 cm 4.0 cm

Below is a diagram of a human arm. 5.0 cm F M -15 cm- Ꮃ . A -35 cm- W B The forearm is lifted by the biceps muscle, which is attached approximately 5.0 cm from the joint. Champion athletes are often found to have muscle attachments farther from the joint than the average person (5.5 cm). (a) Why does this small change in the muscle attachment position give an advantage when lifting or throwing? Explain clearly, referring to the above diagram.10 108

I need to calculate the tensile stiffness along the fibre which have a length of 250um  below are the values ive been given Matrix Stiffness Em = 6 GPaMatrix Strength (sigma)m = 50 MPaFibre Volume Fraction 0.41Fibre Stiffness Ef = 49 GPaFibre Strength (sigma)f = 103 MPaFibre Shear Stiffness  Gf = 23 GPaMatrix Shear Stiffness Gm = 2 GPaInterface Strength ti = 7 MPaFibre Diameter = 7um poissons ratio of matrix = 0.32Poissons ratio of fibre = 0.23tensile stress of 190 MPa applied at an angle of 60 degrees. it is a unidirectional composite.

Q2: A fiberglass composite consists of a matrix of vinyl ester and reinforcing fibers of E-glass. The volume fraction of E-glass is 30%. The density of the vinyl estiser 0.882 g/cm³, and its modulus of elasticity is 3.6 GPa. The density of E-glass is 2.6 g/cm³, and its modulus of elasticity is 76 GPa. A section of composite 1 cm by 25 cm by 2 m is fabricated with the E-glass fibers running longitudinally in the 2000 mm direction. Determine: (a) The masses of vinyl ester and E-glass fibers. (b) The density of the composite. (c) The composite modulus of elasticity in the longitudinal and the perpendicular directions of the glass fibers. (d) If the tensile strength of the glass fibers, is 1 GPA and the tensile strength of the epoxy matrix is 60 MPa, find the tensile strength of the composite in the longitudinal direction.

If you hold your arm outstretched with palm upward and holding a 4.5 kg ball, the force to keep your arm from falling comes from your deltoid muscle FM. Assume that the arm (including the hand) has mass 3.3 kg and the distances and angles are shown in the figure. [Answer in 3 significant figures] 15° Deltoid FM 4.5 kg CG arm Pivot |17 cm 38 cm 44 cm a) Construct a rigid body force diagram of the arm with appropriate labels for all forces and the distance. (Indicate the pivot point) b) Calculate the deltoid muscle force FM. c) Calculate the magnitude and direction of the force Fj exerted by the shoulder joint on the upper arm.

What is the compression force on S1 if lumbosacral angle is 50 degrees? What is the pressure if the contact area is 15 cm^2?

i need the answer quickly

the question is in the picture

10 / 36 110% LQ23]( problem 지25's p37) Exepe20-원 At What angle &' must the (400N) force be applied in order to that the resultant `R of the two 400 N forces has a of (1000 N)? magnitude What will be the angle o between 700 N R and the horizontal (x-axis) ? Ane ∞ = 51.3° 0 = 18 19° P Type here to search

A sample of crosslinked polvisoprene rubber undergoes a constant strain rate axial tension experiment The initial sample measurements are 3.60 cm gauge length (axial direction); 0.b2 cm wide; 0.1/ cm thick:

A composite material consists of 60% glass fibre by volume (V₁ = 0.6). Half of the fibre is in unidirectional (0°) roving form and the other half is continuous fibre (0°, 90°) mat. The matrix is polyester. The properties of the constituent materials are shown in Table 4. Table 4 Density (Mg.m³) Tensile modulus (GPa) Tensile strength (MPa) Fibre 2.6 69 1200 i. Calculate the density of the composite material Matrix 1.1 2 35 ii. Calculate the tensile strength, oc, and the tensile modulus, Ec, of the composite in the 0° and 90° directions using the simple "rule of mixtures" approach.

Find the force pneed to fill the gap. Young's modulus as 300 GPa C 1,5 cm² 2 cm2 P. A 1 cm 1/2 p 0.5 m 0.5 m 1 m 0.5 mm (a) 13.84KN. (b) 14.21KN.

Plz solve correctly

A force F=10i+13j-12k act at a point O, which is the origin. The magnitude and direction of the force is 1) 20.32 Units (0,=60.5 deg, 0,=52.2 deg, 0,=126.2 deg) 2) 40.32 Units (0,=60.5 deg, 0,=52.2 deg, 0,=126.2 deg) |3D 3) 10.32 Units (e=60.5 deg, 0,=52.2 deg, 0,=126.2 deg) 4) 0

Vibration Engineering Mechanical Engineering

(a) Describe THREE (3) types of Materials Selection Method with appropriate example for each method. (b) Give justification for the trend of materials changes based on the information given below with referring to Figure (b). (i) (ii) Metal component from year 1940 to 2020. Ceramic & glasses from year 10,000 BC to 2020.

2.1Apower transmission cable consists of ten copper wires each of 1.6 mm diameter surrounding three steel wires each of 3 mm diameter. Determine the combined E for the compound cable and hence determine the extension of a 30 m length of the cable when it is being laid with a tension of 2kN. For steel, E = 200GN/m2; forcopper, E = 100GN/m2. [151.3 GN/m2; 9.6 mm]

B7

A built-up section is composed of two (2) channels and a baseplate. To determine its strength against loads, the following should be calculated (note: moment of inertia should be about centroidal x and y axes): [6] (ANSWER: 139.398 mm) [7] (ANSWER: 291.637 mm) Properties of channel (C310x30.8): = A 3920 mm²; d=305 mm; by 74.7 mm ; tw = 7.16mm; t = 12.7 mm; x = 17.7 mm ; Ix=53.7 x 10 mm²; ly = 1.61 x 106 mm² Properties of channel (C380x74): 4 = 9480 mm²; d=381 mm; by = 94.5 mm ; tw = 18.2 mm; t = 16.5 mm; x = 20.3 mm; Ix=168 x 10 mm²; Iy = 4.58 x 106 mm² y C380X74 flange -BP305x20 -C310X30.8 web X 105.2500- tw- tf # bf P

From the matrix can you show me how the value stiffness (k) calculated?