4/104 The elements of a rear suspension for a front-wheel-drive car are shown in the figure. Determine the magnitude of the force at each joint if the normal force Fexerted on the tire has a magnitude of 3600 N. 60 mm
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- The car shown in the figure below has a mass of 1673 kg. The coefficient of static friction between the rubber tires and the pavement is 0.6. Determine the maximum incline e [degrees] that the car can drive up if it has rear-wheel drive. 0.85 m 1.2 m 1.7 m Answer: 18.87 Calculate the normal reaction force at the rear wheels for the condition of rear-wheel drive in N. Answer:For the same question, the Driving force (pressing force) of the Nut will be measured with the Torque wrench. While tightening the nut, the contact surface rubs against the fixed surfaces. Accordingly, how much MOMENT do we need to read from the Torque wrench in order to create a force of Fçak=1101 kgf? (Given: Screw pitch M30, Root diameter d1=25.8 mm) Outer diameter of the friction surface under the nut D42 mmFriction coefficient μ=0.6A 70 lb-bag of rice is being pulled by a person by applying a force F at an angle 0. The force required to drag the bag is F(0) = (70p)/(µsine + cose) where u = 0.35 is the coefficient of friction. Determine the maximum F by creating a vector for the angle with elements ranging from 5° to 35° and spacing of 0.01 and use the built-in function max. The maximum F is
- Figure 1 shows a railroad wagon axle and forces acting over it. There are two disc brakes on the wagon axle. Since the wagon wheels are not driven wheels, the load bearing element to which the wheels are connected is called axles. The axle is supported at both ends with bearing A and bearing B and the the weight of the wagon (G) is evenly distributed on both bearings (as G/2). During braking, two disc brakes on the axle are applied Ff force and Ft friction forces are formed on the wheels. Therefore the axle is forced to bend in the vertical direction with the effect of wagon weight (G) and wheel reaction forces (Rt), and in horizontal direction with the effect of braking (Ff) and wheel friction (Ft) forces. At the same time, the axle is forced under torsion because of Ff and Ft forces. GIVEN:Shaft material : 50CrMo4 Wheel material : GS 60 Brake discs’s material: 15Cr3 All the radiuses : 5 mm Average roughnesses for press fit surfaces: Ra =6.3 μm Wheel speed: = 500 d/d Wagon weight per…G -4 ft- AF FE Вс AB Gx Ax FC AF B Select the freebody diagram that would allow you to solve for the force FE using only that FBD if P1 = 2 kip and P2= 3 kip. GF P₁ Ay F BF E 2 Kip 2 кір 4 ft- B 4 ft- 4 ft- >CF ft B B 2 kip -4 ft- 2 Кір E EF P₁ 3Kip 4 ft- 4 ft E 2 кір 52 TFC -4 ft- FE zkip -4 ft Be 4 ft- экір 4 ft ID P₂ D экір 4 ft 4 ft inEquilibrium of Concurrent Force System. The piston of a reciprocating engine exerts a force of 175 kN on the crosshead when the crank is 45° (angle B) past TDC. If the stroke of the piston is 800 mm and the length of the connecting rod is 1.80 m, find the guide force and the force in the connecting rod. Hint: 1=½ stroke; Angle o may be solved using Sine Law in AACO. K= Compressive Force in the connecting Rod E= Piston Effort 70 120 F, = Guide Force Fig. P-1 Fig. P-2 a Tools: EF cos0=0; F sin .=0. R = Ev)* + (E#): ; R 771 =- : tane = sin A sin B sin C
- The positive directions are indicated in the figure. The system is in static equilibrium. 1. For the forces applied on point B, determine the component BAx =__N 2 Determine the component BAy=__N 3 Determine the component BDx=__N 4. Determine the component BDy= __N 5. Determine the component of force BD =__N 6. For the forces applied on point D, determine the component DBx=__N 7 Determine the component DFx=__N 8 Determine the component DFy =__N 9 Determine the tension in cable DF, Tdf=__N 10. The system is in static equilibrium determine the angle =__° 11. Determine the distance d=__m1.25 m E 0.3 m 30° 0.25 m G 0.5 m 0.25 m B 0.15 m - 0.75 m 1.5 m Figure 3 The loader has a mass of 1.18 metric ton, and its centre of mass is at G1. The loader is sliding down on a muddy incline of angle 0 =20°. The kinetic friction coefficient is ux =0.15 and the driver uses the brakes on both pair of wheels. Model the digger as one rigid body. Assume g=10 m/s?. Provide all handwritten steps of your solution; include diagrams and coordinate systems. a, Find the acceleration of the loader, which does not have loading in the bucket. Justify your assumptions and check for consistency within your solution. Include a free-body diagram in your working. 5. Now, the scenario changes. The loader has soil in the bucket with the mass 210 kg at G2, which is assumed to be a point mass. Determine the new centre of gravity and the associated mass moment of inertia for the loader with the soil. The radius of gyration of the loader without soil is k=0.4 m. Show that the loader is still sliding without…Which of the following has the dimension for force M1L-3 M L -1 T-2 M-1 L1 T 2 M1 L1 T-2
- F y A → X CC BY UBC Engineering Your team is prototyping a simple braking system for your model car. The 2.2 kg wheel with a radius of rad r = 0.25 m is rotating at w = 5 A servo motor can apply a variable force F, which in its first two seconds of operation is equal to F N. If the coefficient of kinetic friction between the braking arm and the wheel is uk 10t N and afterwards is equivalent to a constant force of F = 20 0.25, determine the time needed for the wheel to come to a full stop. The point of contact P between the wheel and the - 0.2 i + 0.24 j m from point A. The force of the servo motor is applied at arm is a distance r P A exactly half of the horizontal distance to A from the point of contact. Assume the wheel can be treated as a disk and that the braking arm is massless. BChapter 3, Reserve Problem 3/015 GO Tutorial The rack for storing automobile wheels consists of two parallel rods A and B. Determine the magnitude of the force P required to begin extracting the wheel. The mass of the wheel is m. Neglect all friction. m 45° 31° 52 B Answer: P - mg the tolerance is +/-2%The motorcycle weighs 151 kg and the driver weighs 64 kg. Dimensions: l1 = 0,31 m and l2 = 0,23 m Determine the support force on the rear tire. ( DISCLEIMER: I have allready tried to solve this question before and I have been getting 1307.10N as answer. Seems like this answer is not right.)